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Back Clinic Health Team. The level of functional and metabolic efficiency of a living organism. In humans, it is the ability of individuals or communities to adapt and self-manage when facing physical, mental, psychological, and social changes in an environment. Dr.Alex Jimenez D.C., C.C.S.T, a clinical pain doctor who uses cutting-edge therapies and rehabilitation procedures focused on total health, strength training, and complete conditioning. We take a global functional fitness treatment approach to regain complete functional health.

Dr. Jimenez presents articles both from his own experience and from a variety of sources that pertain to a healthy lifestyle or general health issues. I have spent over 30+ years researching and testing methods with thousands of patients and understand what truly works. We strive to create fitness and better the body through researched methods and total health programs.

These programs and methods are natural and use the body’s own ability to achieve improvement goals, rather than introducing harmful chemicals, controversial hormone replacement, surgery, or addictive drugs. As a result, individuals live a fulfilled life with more energy, a positive attitude, better sleep, less pain, proper body weight, and education on maintaining this way of life.


Dr. Alex Jimenez Presents: Assessing Hormones

Dr. Alex Jimenez Presents: Assessing Hormones


Dr. Alex Jimenez, D.C., presents how to assess different hormones in the body and how different hormone tests can be used to determine the level in the body. This presentation allows many individuals to know what to expect when they are being diagnosed by their primary doctors. We refer patients to certified providers incorporating various hormone therapies to ensure optimal health and wellness. We encourage and appreciate each patient by referring them to associated medical providers based on their diagnosis when it is appropriate. We understand that education is an excellent way when asking our providers intricated questions at the patient’s request and understanding. Dr. Alex Jimenez, D.C., only utilizes this information as an educational service. Disclaimer

Assessing Hormones

Dr. Alex Jimenez, D.C., presents: Welcome to everything you need to know about assessing hormones and how to do the testing. We have decided to do this as a webinar because we only have a little time to do it during the module. After all, that’ll make your life easier. You’ll need to have this information under your belt because here is the most important thing you need to know. Hormone therapy is an art, not a science. If you find five or six practitioners who do hormone therapy, you will find five or six different ways to make a prescription and way more ways than that actually to do testing to monitor it.

Dr. Alex Jimenez, D.C., presents: The important thing is that you keep in mind what we know scientifically is a better or not-so-good way of taking care of the patients in terms of testing. Then find what works for you and become the expert in that. Because if you are consistent over time, you can work around the pros and cons of every given testing modality and figure out what you need to do, regardless of what type of test you end up doing. All right, so what do we need to worry about? There are many potential problems in measuring hormone levels because so many hormone levels fluctuate significantly. In order to evaluate hormones in the body, doctors need to know what, when, and who to test. So we’re going to talk about all of that.

Diagnosing Hormones In A Patient

Dr. Alex Jimenez, D.C., presents: Some vary during the day, some vary during a cycle, and some hormones don’t vary at all. So you need to remember which ones you need to worry about in terms of fluctuation. The studies that have been done don’t measure hormone levels. So, finding normal hormone levels is sometimes problematic. It may be different from what the labs currently use. And in the studies where they have come up with normal hormone levels, a lot of them are much older studies, and the methodology was more unreliable than what we use now. So by keeping that in mind regarding what people call normal hormone levels, many of these studies also would average out non-comparable groups. What this means is that they would be comparing, let’s say, a group of apples, oranges, and grapes and put them all together and say, oh yeah, so this average is going to work.

Dr. Alex Jimenez, D.C., presents: So it’s like doing a meta-analysis, and if you are taking a bunch of different data, you can’t necessarily say that this average makes sense. You probably are already aware of the fact that other labs end up developing different reference ranges. And so if you use multiple different labs, you can’t necessarily compare the test results you’re getting because the reference ranges are different. And, sometimes, even within a given lab, depending on which test kit patients use, like a test from Quest, they may one day use one test kit. So a reference range will be XYZ, and they went to the same lab another day, but they used a different test kit and have an entirely different reference range. And so you have to the point that out to the patients. If you’ve got a smart patient trying to track what’s happening with themselves, they may have the wrong impression during an examination.

Estrogen & Progesterone

Dr. Alex Jimenez, D.C., presents: If you’ve got different reference ranges showing up on your test results, it is best to keep track of that in case you need to remember. Now there are big variations between individuals and even within the same individual. The serum concentrations of both natural and synthetic steroids might need to be clarified between other individuals. There’s a huge variation irrespective of the root of the administration of the hormones. What you expect from one person may be different from the next person. And, of course, within any individual, you’re going to get levels of fluctuation throughout the day based on lots of different things. Everything from perceived or actual stress that will change their hormone levels to foods they were eating that day can make a difference. Hydration status can make a difference. So some of the variations you see within a person, but with different blood draws, can be based on what was going on that day.

Dr. Alex Jimenez, D.C., presents: So try to impress upon your patients as you’re getting testing done to keep the blood draw days the same. Now measuring in different body fluids like serum, urine, or saliva doesn’t necessarily tell us about concentration in other tissues, and doctors need to keep this in mind because the patient may get a false sense of security, and it won’t necessarily have anything to do with the tissue they are trying to treat. Now, many doctors must remember all the different kinds of estrogens they might need to keep track of during examination. So, when they notice estrogen, there’s an estrogen pool. There is free and bound estrogen in the body and estrogen production in the woman or a man in themselves. There are exogenous estrogens that you may be giving them. There are stored estrogens, metabolites, and all these different estrogens doctors need to keep track of. So this is just one example of having many estrogen levels in the body, and the patient is wondering, what is it the doctor is looking at? Could one test give me all this different information? And this is only estrogen. The same thing is true, although not quite as complicated. The same thing is true about the other hormones in the body.

Dr. Alex Jimenez, D.C., presents: Now for progesterone, it is the same ordeal. Other results look like this for estrogens and testosterone, and this is to remind us of all the different variability there is. By showing the variation between different people at their biological stages, for example, premenopausal and postmenopausal. The results that the doctor presents to the patient establish a lighter shade of green on the outside of the intercycle variability from within a given woman. And then the yellowy green is the inter-woman variability, meaning one woman to the next. And then that blue line in the middle is the average; this provides what information they might need to diagnose.

Testing Hormone Levels

Dr. Alex Jimenez, D.C., presents: All right, so let’s look at testing and assessing hormones as we look at all the hormone types, the different ways of testing them, and the pros and cons. There are decades of well-validated research on serum hormone levels. So for the estrogens, estrone, estradiol, and estriol, as well as the estrogen metabolites in the serum, the good news is it measures endogenous hormone production. So if you get a serum hormone level, we know what those results mean.

Dr. Alex Jimenez, D.C., presents: The bad news is these results give you the free and bound hormone. It shows you the total estrogens. However, you can’t order total estradiol and free estradiol test as they don’t offer them. There are limited data regarding serum levels of these metabolites in terms of prediction for health risk. And it can be difficult for some labs to get accurate quantification in postmenopausal women because the estrogen levels are very low. So, keeping that in mind is a matter of knowing your lab and how accurate they are. Now when it comes to saliva, the good news is it’s non-invasive. Patients can do this at home, making it convenient if doctors try to do a serial measurement of estradiols across a whole cycle in a premenopausal woman. Cause no one in the right mind will go to the lab and get blood drawn daily.

Dr. Alex Jimenez, D.C., presents: Knowing that salivary estradiol correlates well to free estradiol in serum allows doctors to see what’s in the saliva and what they want to see in the serum. The bad news about saliva is that there are fewer validation studies than serum. There are still quite a few, so it’s a valid testing method. It’s just that it’s not as well validated as a serum because it still needs to be done. Again, it can be very challenging for some labs because the estrogen levels in the saliva are much lower than in the serum. So doctors must ensure the lab is doing a good enough job assessing these very low levels. All saliva testing can be contaminated by blood from the oral mucosa.

Saliva Testing

Dr. Alex Jimenez, D.C., presents: So if the patient has periodontitis or something along those lines, doctors don’t want them to salivary levels; it is important to tell them to do it before they brush their teeth, not after, in case they bleed when they brush their teeth. But that’s true of any salivary test; you can’t get estrogen metabolites done through the saliva. And the bigger problem in a postmenopausal woman is that many get dry mouth after menopause. And so, it can be really difficult to do the test because they need to produce more saliva to get an adequate specimen. Now, if that happens, they can go for a 24-urine test. The 24-hour urine testing for estrogen and estrogen metabolites can be helpful if you’re trying to get the total daily production of the hormones. You can get measurements of estrogen metabolites, which are stable for a long time.

Dr. Alex Jimenez, D.C., presents: You have plenty of time for processing and get both free and conjugated estrogen measurements. So that’s helpful. The bad news, which is true for any 24-hour urine test, is it relies on accurate volume measurements and complete collections by the patients. Many patients will inadvertently screw that up. When they have a busy day, they’ll go pee and need to remember what they are supposed to do, which can be a problem. So, making sure the patient understands can help with the test results. You cannot use this for people with renal dysfunction because it’s based on creatinine correction. So if their creatinine is abnormal, they will need to be able to give you an adequate, appropriate level and sometimes give you some of these tests that do 24-hour urines will provide you with many metabolites that could be more clinically useful but are not.

Dr. Alex Jimenez, D.C., presents: Now for dried spot, you’re in testing, and you can get estrogen metabolites, which is good because the metabolites are stable for a long time, so that’s no problem. And you can measure both the free and conjugated estrogens on these spots in urine tests. The biggest problem here is that it has the least clinical validation studies. So, it’s a newer way of testing. It is popular and easy for patients, but there is little concern because of the few clinical validation studies they’ve done. Now, additional challenges are mentioned: to think about what a lab has to do; the measurements they need to be able to provide can vary enormously because there are very low levels of estrogen in older women, not on hormone replacement therapy.

Dr. Alex Jimenez, D.C., presents: And then up to measuring these super high doses in women getting ready for IVF. And, you know, the levels can vary by 10,000. Is it reasonable to assume that any test will be accurate for all those circumstances? It is also difficult to assess estrogen levels in women treated with aromatase inhibitors because they will likely have very low estrogen concentrations. So that may not be accurately detected by standardized testing. And then specificity is a problem because we talk about how estradiology focuses mostly on how it gets broken down into estrone and then how the estrones get broken down. But the reality is that estradiols convert it to more than a hundred different metabolites, which may interfere with accurate quantification.

Serum Testing

 Dr. Alex Jimenez, D.C., presents: So, labs must keep that in mind and ensure that they’re getting adequate specificity for you. Another interesting tidbit is that exogenous sources of S-trial can lead to falsely elevated estradiol levels. So keep that in mind if you have a funny test result that makes no sense.

Dr. Alex Jimenez, D.C., presents: Progesterone and progesterone metabolites in the serum; there’s lots of literature to support using a progesterone level drawn hopefully on day 21 of a 28-day cycle to confirm ovulation. Progesterone has problems as it differs from estradiol. So it is acceptable to use serum progesterone levels for that, as the reproducibility of serum levels is limited if the serum levels are low. So if what that means is if you were to take a person in the first half of her cycle and draw a progesterone level three days in a row at the very beginning of the process and the progesterone should be low, you may not get similar numbers just because the hormone levels are low.

Dr. Alex Jimenez, D.C., presents: So the reproducibility makes doctors a little crazy, but that’s something they need to keep in mind with the serum. Again, saliva testing is not invasive; it’s convenient if you want to follow an entire cycle in a premenopausal woman. Also, research shows that a salivary level of 17 alpha hydroxyprogesterone is just as acceptable as a serum level for diagnosing congenital adrenal hyperplasia. Now the downside for progesterone’s metabolites salivary levels of progesterone in its metabolites is that you’ve got a rapid fluctuation of progesterone levels in the saliva. So, if you’ve got somebody who doesn’t wanna get their blood drawn and doesn’t mind spitting into a tube, you can use this instead.

Dr. Alex Jimenez, D.C., presents: So you should use more than one test result to make a decision; you may need serial sampling to get a feel for the average. There’s also a problem with cross-reactivity that might interfere with immunoassays and affect the results. And again, the same problem is having much lower progesterone levels in the saliva than in the serum. So for some labs, that can be challenging to get preliminary analysis and the same problem in terms of contamination by blood; however, that’s true of all cellular tests. The 24-hour urine and the spot dry urine testing for progesterone have the same problem because the progesterone metabolites will correlate with symptoms. So they’ve studied, for instance, allopregnanolone in urine. The level of that does connect with the sleep quality in perimenopausal women.



The Different Implications Of Hormone Testing

Dr. Alex Jimenez, D.C., presents: The implication is that if it’s correlating, it’s probably an accurate level; however, progesterone is hard to quantify in urine. And so, they use metabolites for assessment and determine the progesterone level based on the metabolites. That’s great, except there’s no literature describing the clinical utility of progesterone metabolites. So progesterone in the urine is relatively problematic regarding the accuracy and what you are getting. Part of the issue with serum progesterone is that very little of it is available, and non-protein ground, most of it is bound to all and other proteins; it’s the free progesterone that is available to the target tissues and also to saliva. So the progesterone that you’re measuring in the serum is mostly the bound-up progesterone, not what is clinically important.

Dr. Alex Jimenez, D.C., presents: Transdermal progesterone is extremely difficult to measure because anyone gets metabolism by five alpha reductases in the skin. It’s rapidly absorbed by red blood cell membranes and delivered to the tissue. And really, it comes down to that after the patient uses exogenous progesterone cream or gel, they get these crazy high levels of progesterone in the saliva and the capillary beds, but not in the serum. And so there could be a better way to measure what’s happening to the patient. So transdermal progesterone, trying to follow that with any testing is difficult.

Dr. Alex Jimenez, D.C., presents: There are decades of research on serum hormone levels. In serum testing, testosterone, and its metabolites, you can get both a total and a free hormone level test, and you can also get a DHT level, which is helpful. There are established serum ranges for the diagnosis of androgen insufficiency. So serum levels for testosterone are fine in general. It can be difficult to assist the whole serum if the levels are low, like in women and kids and hypogeal men. So, you need to know your lab and its methodology. Suppose you’re assessing testosterone in women, hypogeal men, or kids because they must ensure they’re doing the appropriate serum test to get these really low levels accurately.

Dr. Alex Jimenez, D.C., presents: For saliva testing, it is very convenient to obtain the sample. There are established ranges for diagnosis of antigen insufficiency, and it’s easy to use this testing for differentiating between gonadal and hypogonadal men. And you can get a free hormone level as lots of published research on using salivary levels for assessing testosterone. However, the problem is like with progesterone; you get this rapid fluctuation in saliva. You might need more than one saliva test result to get reliable information. So you don’t necessarily want to decide based on just one result. And again, you need to know your lab because the levels are much lower than in the serum. So it is challenging to get an accurate story and be careful about blood contamination. In urine testing, the 24-hour and spot urine have slightly different issues.

Dr. Alex Jimenez, D.C., presents: The 24-hour urine testing for testosterone can be used to get a total daily testosterone production. Patients will get a free hormone level and metabolites, which is nice. They can use that information to indirectly assess five alpha-reductase and aromatase activities based on how many different metabolites they’re getting. Only a few data support the clinical utility of all the measured metabolites. There is a polymorphism of UGT to B17; if the patient has that, their urinary testosterone level will return to zero, so keep that in mind if you ever get a test result. After all, it’s so low because it may be that your patient has this issue. Now spot urine will give you some of the same pros as you will get free hormone levels and metabolites. This allows you to use that information to assess the five alpha-reductase aromatase activities; however, the problem is there; like with the other hormones we’ve discussed, this testing generally has fewer clinical validation studies because it’s a newer form of testing, so keep that in mind.

Cortisol

Dr. Alex Jimenez, D.C., presents: Cortisol and its metabolites in the serum are similar to the other hormones mentioned, as there are validated reference ranges for cortisol. Lots of peer review literature detailing the use of this test, and patients can feel comfortable getting these results. It will tell them just total cortisol, not their free cortisol. So by keeping that in mind, they’ll get the diurnal pattern. They can only get a four-point test as they would with saliva because they don’t have normal ranges for four different times in the day. And many patients mention to their doctors as they get the serum cortisol, they go, “Wait, you don’t understand. I am so scared of my blood being drawn that it shoots my cortisol up, and I don’t normally look this bad.”

Dr. Alex Jimenez, D.C., presents: Keep in mind that in serum, they only have normal reference ranges for two times of the day, 7 to 9:00 AM and 3 to 5:00 PM. So you have to ensure that if you use serum cortisol, they go in fasting before nine o’clock, or they can go later in the day. And if they go later in the day, they don’t have to fast. So if you get cortisol at 10 or 11 in the morning, it isn’t very helpful to the results. Now the salivary testing, lots of people are becoming familiar with this.

Dr. Alex Jimenez, D.C., presents: You can get your diurnal pattern because many companies have kits where you’ve got four or five samples throughout the day. There is abundant peer-reviewed literature detailing the use of this. And this is for cortisol, not for the cortisol metabolic. It reflects the unbound plasma concentration, which is not what we’re seeing with the serum. The problem is that 11 beta hydroxy steroid dehydrogenase is an enzyme in the salivary glands that significantly converts cortisol to cortisone. So there are some questions about the results doctors are getting in the salivary cortisol and what’s happening or did it get converted to cortisone, and you’re not picking that up in the test?

Dr. Alex Jimenez, D.C., presents: So when looking at cortisol metabolites in the saliva, which some companies do and some don’t, the salivary cortisone correlates with cortisol exposure over 24 hours. There’s a moderate level of literature using this test but enough that you should feel comfortable. There are issues when your serum cortisol is really low, making it seem like the patient is crashing or under hydrocortisone therapy. That makes the salivary cortisone a superior serum marker compared to the salivary cortisol. Under these circumstances, because of how this is being processed, only a few companies are even looking at cortisone directly in the saliva. So at this point, because especially of the moderate literature level, you will primarily be doing cortisol levels in the saliva.

Urine Testing For Hormones

Dr. Alex Jimenez, D.C., presents: So let’s move on to the urine test. Now, in a 24-hour urine test, you can assess the cortisol ratio, which can be helpful when diagnosing. And 24-hour free cortisol correlates with the serum-free cortisol level; however, the only problem is there are limited clinical validation studies for this. And, in the 24-hour urine test, you’re not getting a diurnal cortisol pattern. And, in the spot urine, you can get the cortisol ratio, which can be helpful. You can have the patient do the spot urine test multiple times a day so you can get the diurnal change just like you would with saliva. But unfortunately, the spot you’re in testing has the least clinical validation studies. So you have to keep that in mind. So with this, primarily, people feel most comfortable with using either serum levels done at the right time of day, understanding that you’re not getting the unbound cortisol, or they’re doing a four-point salivary test.

Dr. Alex Jimenez, D.C., presents: The four-point salivary test could see a pattern between what the patient told their doctors about their energy level throughout the day and how they felt and compared that with what the result returned. Many doctors note what they had expected the test result to be before the national labs even had it available.

DHEA Testing

Dr. Alex Jimenez, D.C., presents: We will discuss DHEA and DHEA sulfates separately since DHEA in the serum has many clinical validation studies that can make you feel comfortable getting adequate results. Now, DHEA has a diurnal pattern. So you have to ensure they get it done at the right time of day since this is fasting before nine o’clock in the morning, just like with cortisol. A DHEA done later in the day means nothing; however, a DHEA sulfate in the serum doesn’t follow a circadian pattern, so a single test done at any time is okay.

Dr. Alex Jimenez, D.C., presents: There are numerous clinical validation studies about DHEA; unfortunately, there is a problem with DHEA sulfate since it has a little circadian pattern. You may miss small variations in a DHEA over time in a person based on how they’re feeling and stressed out. So occasionally, it’s nice to check the DHEA in a patient as long as they’re done in the morning because then you’ll get a feel for the changes over time in the same individual you wouldn’t see with the DHEA sulfate.

Dr. Alex Jimenez, D.C., presents: Salivary testing for DHEA is where you measure free DHEA in the body, which is great. There’s a correlation with serum levels, and it’s not invasive. The problem is that the concentration is inversely related to the salivary flow rate and is also affected by the salivary pH. An example would be someone walking past the bakery, starting to salivate heavily based on what they just smelled. This could change their results for their salivation rate when they are doing their DHEA test. DHEA sulfate has the same basic problem in the saliva, related to the salivary flow rate and the salivary pH. So keep that in mind if you’re looking at salivary levels in urine, whether this is 24-hour or spot urine; there are no clinical validation studies about looking at either DHEA or DHEA sulfate in the urine. So, keep that in mind if you’re doing urine testing and they’re giving you a whole panel that includes DHEA or DHEA sulfate, you may need to know what those results mean.

Dr. Alex Jimenez, D.C., presents: For pituitary hormones, the preferred testing is the FSH, LH, and prolactin serum. Not convenient for serial measurements throughout the day to detect the LH surge, for instance, but the results are very accurate. And in saliva, there’s limited peer-reviewed literature detailing salivary pituitary hormones and whether or not they’re adequate. LH detection kits at home are convenient for urine tests since they are widely used and have been around for a long time. The LH surge correlates with the urine and works well with the LH surge’s serum. So if you’re trying to help people figure out where they are in their cycle and whether or not they’ve ovulated, this test is the way to go. It doesn’t do a good job of quantifying it; it just tells you there’s a surge because these are bigger hormones, so they don’t get into urine very easily.

Dr. Alex Jimenez, D.C., presents: So you’re going to know whether or not you’ve gotten the surge, you’re not going to know what the actual level is, and that’s okay because most of the time, it doesn’t matter what the hormone level is. So essentially, unless you’re just trying to find out if they got an LH surge, you want to use the serum for either FSH, LH, or prolactin. For sex hormone-binding globulin, most clinical validation studies are in the serum; you can’t measure it in saliva or urine, so that’s easy to remember. So we’ve already talked about the issues with different forms of testing, and there are only a few forms of testing that will give you everything you need to know about every hormone you need to know.

When Is The Best Time For Hormones?

Dr. Alex Jimenez, D.C., presents: So now, when is the best time to test hormones? Early morning is when the hormones will be the highest for most hormones. So, the best way to go and test hormone levels like cortisol and gonadal hormones is first thing in the morning since you have to be consistent and fast because what you’ve eaten can change hormone levels. So if you’ve always fasting, at least you’ll find consistency between specimens and the same person. You also need to know where they were in their cycle for certain tests. So, women patients who are still cycling need to record the first day of their next period to know what day you did their testing. Otherwise, they’ll have to use ovulation kits to know exactly where they are.

Dr. Alex Jimenez, D.C., presents: And of course, the downside here is that if you’re trying, for instance, to get a day-21 progesterone, and she typically has a 28-day cycle, so you tell her to go on day 21, but that particular month she has a 35-day cycle, you didn’t get the level that you were looking for. So it can be a little problematic, but remind them to keep track of it so that you won’t be able to look back and know where they were when they had their tests done. So, when do we want these tests in pre and perimenopausal women? Suppose you want progesterone on day 21. You can also do a sex hormone-binding globulin on that day. Menstruating women shoot for as close to day three for estradiol, estrone, FSH, testosterone, or a sex hormone-binding globulin.

Dr. Alex Jimenez, D.C., presents: Now, even though these are ideal, can you get them on other days of their cycle? Yes, but they will have different accuracy. And, of course, it may be an additional day than day three because what if day three happens to land on the weekend and the lab’s not open? So, please consider that what you are looking for here is to test the hormone levels when they’re at their highest. And that’s why we’re shooting for three and 21. So, you know, here’s day three and four. And so the FSH is going to be a nice level here. The estradiol bounces around a lot at this point, so trying to get it in this part of the cycle would be less helpful. And, with progesterone, you’re going to get your peak here, so that’s why you want to try to shoot for 21 days because you know that’s going to be the easiest way to ensure you’re getting it. And also, it’ll help you be more consistent from cycle to cycle if you’re always trying to get it at the same time of the process.

Hormone Replacement Therapy

Dr. Alex Jimenez, D.C., presents: Now here’s where it gets tricky since it’s one thing to find out where the person is before you put them in any hormone replacement therapy; however, monitoring hormone replacement therapy gets more problematic still. If you’re using oral estrogen, it is recommended to get a serum baseline before HRT and then monitor during treatment; if you’re doing oral estrogen, the salivary levels don’t reflect the exogenous estrogen use at all, so they’re not very helpful.

Dr. Alex Jimenez, D.C., presents: And oral estrogen or any hormones that undergo this test must accurately reflect the liver’s first-pass metabolism and the urines’ levels. So if you’re doing oral estrogen replacement therapy, the only way to assess it is with serum because doctors will convince the patient with the module, so you probably don’t want to use oral estrogen anyway. If you’re using sublingual estrogen, the levels will rise and fall rapidly within hours. And so the serum’s not effective in terms of measuring. The saliva will make no sense if you’re doing sublingual because you just had your estrogen there. So what does it mean? It means that 24-hour urine and drive urine testing with sublingual hormones aren’t recommended because there’s always a question of how much you are swallowing and how much is getting absorbed sublingually.

Dr. Alex Jimenez, D.C., presents: Now, if you notice that it says in sublingual, there could be better testing methods. Since you don’t know how much was swallowed and got the first-pass metabolism effect, the result in a 24-hour or dried spot urine may need to be clarified. So that’s problematic. You can still do sublingual estrogen replacement therapy; it just means there’s no great way to test it. If you’re using estrogen creams, serum testing can be effective, and we know that clinical parameters correlate to serum levels when using estrogen creams, so we can do that. In saliva, estradiol and estriol are actively transported into the saliva; the levels are way higher than you would see in the serum and are highly variable. So salivary levels for creams don’t make sense, and there are no good peer-reviewed studies detailing the effective estrogen cream on urinary levels.

Using Hormone Creams & Patches

Dr. Alex Jimenez, D.C., presents: It is probably not a great idea to use urine levels for someone using estrogen creams at the time. If you’re using labial or vaginal estrogen, the serum test appears to be the best choice for monitoring absorption. The salivary levels don’t reflect any dose changes. So basically, it’s probably a waste of time to get a salivary level trying to do urine testing; using vaginal or labial estrogen might be problematic because how do you know you didn’t contaminate the urine specimen. And if you’re using a patch, serum values will rise dose-dependently and then rapidly decline the following removal. It may be helpful, we know that the serum values change based on when you put the patch on and when you take it off, but it is still problematic.

Dr. Alex Jimenez, D.C., presents: There’s no peer-reviewed evidence showing that salivary estrogen can be used to monitor the estrogen patch. And when it comes to the urine testing and the estrogen patch, it does appear that the values in the urine will go up dose-dependently. It may be relatively accurate, but it’s not the best clinically validated test for an estrogen patch. The take-home message here is that no testing is perfect and many of us adjust the dose to the lowest amount, the lowest level we can get, and still have our symptoms controlled. That doesn’t mean they don’t test; you must try to ensure you’re not overdosing on this person. But keep in mind that there are a lot of limitations around what testing can be helpful depending on what form of estrogen replacement you’re using.

Dr. Alex Jimenez, D.C., presents: Now, progesterone and oral progesterone, if you’re using that, the levels rise and fall quickly. You may not be able to catch a serum level that makes sense if you’re taking your progesterone in the evening and then measuring in the morning. Because most women, if they’re taking oral progesterone, will take it in the evening because it helps them sleep. There’s also a problem with the cross-reactivity of metabolites with the immunoassays. So progesterone replacement therapy, if oral, you must take the serum levels with a grain of salt. The same thing with saliva and 24-hour urine testing. We talked about how you’re not getting progesterone; you’re getting progesterone metabolites, so that might be useful. But there’s the problem of how clinically valid the use of progesterone metabolites is. So oral use of progesterone, getting a level, and following it is a little tricky.

Dr. Alex Jimenez, D.C., presents: Now with creams and transdermal progesterone, none of the tests makes any sense because you get mentally increased levels in the serum that don’t rise in any particular way that makes sense. Like all steroid hormones, these are fat-soluble, so if it goes and sits in adipose rather than getting into the bloodstream, it doesn’t necessarily reflect a serum level. Doesn’t necessarily reflect the tissue levels in the uterus and the breast, which is where we care about it. So a serum level for progesterone cream is problematic. Salivary levels after progesterone cream go way up and don’t correspond to symptoms at all. So don’t bother getting salivary level after a progesterone cream. There’s some evidence in urine testing that you can get small increases in the pregnant dial three glucosides if you use progesterone cream. And so it may turn out that we can use that as a measure of what your progesterone is doing.

Dr. Alex Jimenez, D.C., presents: But this still needs some more testing. So it would be best if you remembered that there needs to be a reliable method to track what’s happening when a person uses progesterone cream. So please take your time with getting a level and making a decision based on it. Now, vaginal progesterone suppositories have the same problem. You get minimally increased levels in the serum, which will not give you an adequate result. Progesterone melts or atrocious; you can use serum levels in at troche because you get a more accurate level in the serum than if you had taken it orally. There’s a lack of peer-reviewed research on salivary levels after vaginal progesterone suppositories. And you have to be careful if you’re trying to do urine testing because how do you know you didn’t contaminate the sample?

Dr. Alex Jimenez, D.C., presents: You can’t use a salivary level because you just had the troche or the melt in the person’s mouth. And then, there is at least a potential problem with getting a urine level for a troche or melt because, like a sublingual, how much of this are you swallowing? Individuals may consume some of it and are subject to first-pass metabolism, which means you won’t be able to pick it up in the urine. The larger portion will be absorbed into the capillary blood and probably be accurate in the 24-hour or dry urine test. But that needs to be adequately studied, so keep that in mind if you’re using atrocious or melts. And this is a study that showed that after applying topical progesterone, the saliva and the capillary blood levels were very different compared to those seen in the serum or whole blood.

It’s Important To Do Research

Dr. Alex Jimenez, D.C., presents: So this is just an important research study to remind you of the reliance on serum levels for progesterone. If you’re monitoring, topical dosing can lead to underestimated tissue levels, so you’ll give more than you need. So, be careful about relying on serum levels for topical progesterone because you’re going to overdose people like crazy. And remember, if you overdose on progesterone, it’s high up in the steroid hormone pathway, and you don’t know what this person’s body will do with it; they might turn it into pretty much anything else. Now, testosterone replacement therapy creams or gels can cause blood levels, and the serum level rapidly increases with the application and doesn’t reliably reflect dose changing, any dose changes. So the serum and blood levels are probably not the great way to go. In the saliva, the levels are much higher than the serum and are highly variable since they may give a false indication of overdose.

Dr. Alex Jimenez, D.C., presents: In the urine testing, there’s not good in the 24-hour urine. You probably want to use something other than 24-hour urine. The good news is the dried urine. Now in dried urine, the epitestosterone can be measured if there’s going to be suppression due to exogenous testosterone production if that’s what you think is going on. You can measure the epitestosterone in dry urine testing, which will tell you whether or not, you’ve suppressed this person’s production of testosterone by giving them some. Now, vaginal or labial application of testosterone, there’s no good way to get a blood level that makes sense. The salivary levels, like any other cream or application we might have on your hands, you have to be careful because if you’re handling the specimen vials, to get the saliva, you might get it into the testing medium.

Dr. Alex Jimenez, D.C., presents: And then, just like any vaginal or labial application, if you’re trying to get urine specimens, you have to be careful that you’re not contaminating the urine and getting a falsely elevated level. Blood levels are good if you’re doing testosterone injections, either injection or pellet. Get one-third baseline, and use them for monitoring. It gives you adequate levels. You’ll get a significant elevation in saliva after an IM injection, but there’s wide variability from person to person. So you must take that with a grain of salt regarding how accurate your result might be. The same thing happens in the 24-hour urine specimen. You’re going to get an elevation after an IM injection, but then, there’s a great deal of variability, so who knows how accurate it is?

Dr. Alex Jimenez, D.C., presents: With a salivary level, there’s only some correlation to the bioavailable testosterone. If you’re using a testosterone patch, you can get adequate levels, and there are good studies to show that a blood level will be okay. If you’re using a testosterone patch, the urinary levels, both in 24-hour urine and dry urinary levels, will reflect the increasing doses. You’re getting a reasonably good level with using that. Now, if you’re using DHEA treatment or oral DHEA, you’re going to get a rapid increase in the blood levels right after the oral supplementation as you get with the saliva. You get that also in saliva and also in urine. So you’re picking up on the fact that you took the DHEA test.

Conclusion

Dr. Alex Jimenez, D.C., presents: The problem is variability in the blood, saliva, and urine results. Many don’t particularly appreciate using a lot of oral DHEA anyway because, like all steroid hormones, your body’s going to take it to the liver, and the liver has the opportunity to change it into something else before it even gets into the bloodstream to do its job. Other applications may be more helpful, like transdermal DHEA or topical DHEA; you’ll have to see how the patient feels in terms of symptoms because if you use topical DHEA, the blood levels you’ll get a big rise right after the initial application.

Dr. Alex Jimenez, D.C., presents: So what does that mean because it drops right away? Then, in the saliva after transdermal application of DHEA, the levels will increase, but not linearly. So that doesn’t make any sense. And there is no peer-reviewed research detailing what happens in DHEA levels in the urine after transdermal application. The bigger issue then becomes you might want to keep an eye on what the downstream breakdown products are doing because if you’re not able to get a good DHEA level, you might want at least look at testosterone and estradiol. And that’ll give you some fuel if you’ve overdosed or underdosed on the DHEA. Now, with the vaginal or labial application, the levels in the blood don’t go off at all.

Dr. Alex Jimenez, D.C., presents: There’s no research detailing levels after vaginal application looking at salivary or urinary levels. So you can’t use that as a way of monitoring it. So again, this will be just a matter of following the person and how they feel after using it. You’re not going to need to worry about getting any measurements afterward. It’s simply clinical. The test you choose depends on what you’re giving the person, the form you’re giving it in, and then what you’re trying to find out. By finding a treatment form you like and feel comfortable with, understand whether or not to get testing depending on the structure and replacement you’re using. And then, make sure that you are getting helpful information and not misleading information.

Issues In Your Calves? It Might Be Trigger Points In The Soleus Muscles

Issues In Your Calves? It Might Be Trigger Points In The Soleus Muscles

Introduction

The calves are extremely important to the lower portions of the legs as they allow the individual to move around and help stabilize the entire body. The calves have two muscles: the gastrocnemius and the soleus, which provide plantarflexion and stability at the ankle joint. These two muscles work together to ensure that the upper body’s weight doesn’t lean forward too much to let the individual fall. However, when many people overuse the calf muscles constantly, it can cause the muscle fibers in the lower legs to be overstretched and develop small nodules known as trigger points to cause referred pain to the calves and the ankles that can affect a person’s ability to walk, run, or jump. Today’s article looks at the soleus muscle, how trigger points affect the muscle, and different methods to reduce pain while managing trigger points along the calves. We refer patients to certified providers that incorporate various techniques in the lower body extremities, like lower leg and calve pain therapies correlating to trigger points, to aid many people dealing with pain symptoms along the soleus muscles, causing muscle cramps and issues along the ankles. We encourage and appreciate each patient by referring them to associated medical providers based on their diagnosis when it is appropriate. We understand that education is an excellent way when asking our providers intricated questions at the patient’s request and understanding. Dr. Alex Jimenez, D.C., only utilizes this information as an educational service. Disclaimer

What Is The Soleus Muscle?

 

Do you feel a cramping sensation in your calves? Do your feet hurt when you are walking, jumping, or running? Or are you experiencing tightness in your calve muscles? When a person is experiencing calf pain in their legs, it could be trigger points causing overlapping issues in the soleus muscles. As stated earlier, the calves have two muscles: the gastrocnemius and the soleus. The gastrocnemius makes up the round shape of the calves and is a complex, superficial muscle. At the same time, the soleus is a large, flat muscle deep within the gastrocnemius and forms the calcaneal tendon (Achilles tendon), which can be mistaken as a nerve for the ankle. Studies reveal that the soleus muscle works together with the gastrocnemius, and these muscles constitute a plantar flexor. The soleus is part of a group of muscles known as antigravity muscles. It acts like a skeletal muscle and helps maintain good posture in the body to prevent the sheer body weight from falling forwards at the ankle when standing.

 

How Do Trigger Points Affect The Soleus Muscle?

 

The calves are essential for the movement and mobility functions of the body. When the calve muscles have been overused to repetitive movements or have been dealing with trauma, it can cause the muscle fibers to tear and develop trigger points along the calves causing referred pain to travel down the ankles. Trigger points along the soleus muscle are tricky to diagnose since they cause referred pain to the surrounding muscles. “Myofascial Pain and Dysfunction,” written by Dr. Janet G. Travell, M.D., mention that, unlike the latent trigger points that can affect the gastrocnemius, active trigger points can affect the soleus muscle and cause tenderness referred to the heel. When muscle tenderness affects the heels, it can cause trigger points to mimic chronic conditions like plantar fasciitis. Additional studies reveal that musculoskeletal impairments like trigger points in the soleus muscle could potentially lead to biomechanical changes in the ankle. When trigger points cause hypersensitivity spots in the skeletal muscle taut band, it can restrict the soleus muscle to allow ankle dorsiflexion. Individuals with active soleus trigger points are prone to develop low back pain due to ankle dorsiflexion restriction, leading to them leaning over and lifting objects improperly.

 


Trigger Point Of The Week: Soleus – Video

Have you been dealing with pain traveling down from your calves to your ankles? Experiencing stiffness around your ankles? Or do you feel like you are about to fall? These pain-like issues are associated with trigger points along the soleus muscles along the calves. The soleus is one of the two muscles (the other is the gastrocnemius) that make up the calves and acts as a skeletal muscle to help maintain good posture in the body. When trigger points affect the soleus muscle, they can cause referred pain to the calves and mimic chronic issues like plantar fasciitis at the ankles. The video above explains where the soleus muscles are located, deep within the gastrocnemius, where the trigger points are causing referred pain to the ankles, and where they are in the soleus muscle fibers in the calves. Even though trigger points can cause referred pain in the affected muscle fibers of the body, they are treatable and can be managed through different methods to help the calves.


Different Methods To Reduce Pain And Manage Trigger Points In The Calves

 

Even though trigger points can affect the soleus muscles and cause referred pain to the ankles, different methods can reduce the pain and help manage trigger points in the calves. Studies reveal that when there are multitudes of therapies that can help manage trigger points, it can help reduce the pain affecting the soleus muscle by optimizing muscle function and preventing the development of chronic pain syndromes. Besides therapies that target trigger points, corrective actions and stretches can help release the pain from the soleus muscle. Incorporating calf stretches, having a correct posture when sitting down, wearing long loose socks while sleeping, and wearing low heels can prevent the soleus muscle from shortening and help manage trigger points from re-occurring in the calves. When people start to take care of their calve muscles, it can help their mobility and stability at the ankles.

 

Conclusion

As part of the calf muscles and an antigravity muscle, the soleus works with the gastrocnemius to help with stability and plantarflexion to the ankles. This muscle is deep within the gastrocnemius and helps maintain good posture in the body that prevents a person from falling forward at the ankles when standing. When the soleus muscles have been overused, they can develop tiny knots in the muscle fibers known as trigger points that can cause referred pain to the ankles. Trigger points along the soleus muscles can cause overlapping features in the calves by restricting ankle dorsiflexion, causing individuals to develop low back pain associated with leaning forward. However, various therapies can manage trigger points through multiple treatments that can reduce the pain and allow stability back to the calves, enabling the individual to continue walking without feeling pain.

 

References

Binstead, Justin T, et al. “Anatomy, Bony Pelvis and Lower Limb, Calf – Statpearls – NCBI Bookshelf.” In: StatPearls [Internet]. Treasure Island (FL), StatPearls Publishing, 29 May 2022, www.ncbi.nlm.nih.gov/books/NBK459362/.

Jurkovicova, Emma. “Soleus Muscle.” Kenhub, Kenhub, 14 Feb. 2022, www.kenhub.com/en/library/anatomy/soleus-muscle.

Travell, J. G., et al. Myofascial Pain and Dysfunction: The Trigger Point Manual: Vol. 2:the Lower Extremities. Williams & Wilkins, 1999.

Valera-Calero, Juan Antonio, et al. “Prediction Model of Soleus Muscle Depth Based on Anthropometric Features: Potential Applications for Dry Needling.” Diagnostics (Basel, Switzerland), U.S. National Library of Medicine, 7 May 2020, www.ncbi.nlm.nih.gov/pmc/articles/PMC7277950/.

Disclaimer

Muscle Cramps In The Calves? Might Be Trigger Point Pain

Muscle Cramps In The Calves? Might Be Trigger Point Pain

Introduction

Various muscles help support the lower legs in the body and allow movement to the host. The lower extremities include the hips, pelvis, thighs, legs, knees, and feet. At the same time, the various muscles help provide support and stability to the upper body’s weight and incorporate mobility and movement for the entire body to go from one location to another. The legs have two sections connected with the knees; the upper portion has the hips and thigh muscles, while the lower legs have the calve muscles, shin muscles, and the Achilles tendon. The calve muscles have two groups of muscles, and when the calve intense exercises, or normal factors have overused muscles may potentially lead to muscle cramps associated with trigger points. Today’s article examines one of the calve muscles known as the gastrocnemius, how the calves are affected by trigger points and corrective actions to prevent muscle cramps in the calves. We refer patients to certified providers that incorporate various techniques in the lower body extremities, like lower leg and calve pain therapies correlating to trigger points, to aid many people dealing with pain symptoms along the gastrocnemius muscles, causing muscle cramps. We encourage and appreciate each patient by referring them to associated medical providers based on their diagnosis when it is appropriate. We understand that education is an excellent way when asking our providers intricated questions at the patient’s request and understanding. Dr. Alex Jimenez, D.C., only utilizes this information as an educational service. Disclaimer

What Are The Gastrocnemius Muscles?

 

Have you been dealing with walking from one place to another? Do your calves feel hard or tense with the slightest touch or movement? Or are you feeling excruciating pain in your calves that make it hard to move? These pain-like symptoms are indicators of trigger points associated with the calves affecting the gastrocnemius muscles. The calves are mostly referred to as the posterior portion of the lower legs responsible for the foot and ankle plantarflexion while also engaging in activities like running or jumping. The two muscles that make up the calves are the gastrocnemius and the soleus. The gastrocnemius is a complex, superficial muscle fundamental to good posture or walking. This muscle has a casual relationship with the lower body as it affects hip movement and the lumbar area of the spine. The gastrocnemius provides a round shape for the calves to form and narrows down to the ankles, where it forms a tendon.

 

How Are The Calves Affected By Trigger Point Pain?

 

Since the gastrocnemius provides the round shape to form the calves when the muscles have become overused or injured in a sports activity, it can cause the individual to have limited mobility. Studies reveal that a tear in the gastrocnemius muscles can implicate lower leg trauma and affect the muscle function to plantar flex the foot at the ankle joint and reduce flexion on the leg to the leg knee joint. When it comes to the development of trigger points along the gastrocnemius muscles that are affecting the calves, according to “Myofascial Pain and Dysfunction,” written by Dr. Janet Travell, M.D., the book states that latent trigger points along the gastrocnemius may cause individuals to complain about calf cramps on the legs, however, when the trigger points are active, the individual is aware of the calf pain and would complain about experiencing pain in the back of their knees. The book also mentioned that trigger points associated with the gastrocnemius muscle could be mistaken for other conditions like plantar foot pain or radiculopathy in the sacroiliac joints. When trigger points affect the calf muscles, it can lead to mobility issues and causes people to be unstable when walking. 

 


Trigger Point Of The Week: Gastrocnemius Muscle- Video

Have you been dealing with calf pain when walking for a short distance? Do your calf muscles ache or tense up when you put slight pressure when stepping down? Or do you feel that your calf muscles are hard when resting? Many of these issues affecting the calves are associated with trigger points affecting the gastrocnemius muscles. The gastrocnemius muscle is one of the muscles that make up the calves in the lower legs. This complex, superficial muscle provides a round shape to the calves and can become overused in various activities that can cause a person to have limited mobility. When the gastrocnemius muscle is overused, it can develop tiny nodules in the muscle fibers known as trigger points that mimic other conditions affecting leg mobility. The video above shows where this complex muscle is in the calves and where the trigger points are located in the muscle fibers. Trigger points along the affected muscle can cause referred pain while mimicking other conditions that can often confuse people about what they are feeling. All is not lost, however, as trigger points are treatable and can be managed through various treatments.


Corrective Actions To Prevent Muscle Cramps On The Calves

 

When the calf muscles like the gastrocnemius are causing symptoms of pain and muscle cramps due to trigger points, there are various treatments and corrective actions that can prevent muscle cramps from causing more issues in the legs and even help manage trigger points from re-forming in the muscle fibers. Some corrective actions that can help improve calve function are gently flexing the foot at the ankle joint to allow the calf muscles to tract and retract to reduce swelling and pain. Other correction actions that people should incorporate to prevent muscle cramping in the calves when they are sitting is to gently rock in a chair to reduce prolonged immobility to the calves and increase blood flow. Studies reveal that dry needling and other various treatments can help reduce muscle stiffness in the gastrocnemius and improve muscle strength in the calves.

 

Conclusion

The calves are part of the legs that allow plantarflexion at the ankle joint. Known as the gastrocnemius muscle, it makes up the calves’ round shape. The gastrocnemius muscle is complex and superficial as it forms a rounded shape at the calves and narrows down at the ankles. However, when the muscle has been through various activities and is constantly overstretched, it can affect a person’s walking mobility and develop tiny nodules known as trigger points. Trigger points in the gastrocnemius muscle can cause referred pain in the calve muscles and mimic conditions like plantar foot pain to the feet. Fortunately, various treatments and corrective actions can prevent referred pain from re-occurring in the calves and bring mobility back to the legs so a person can continue to their destination.

 

References

Albin, S R, et al. “The Effect of Dry Needling on Gastrocnemius Muscle Stiffness and Strength in Participants with Latent Trigger Points.” Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology, U.S. National Library of Medicine, 9 Oct. 2020, pubmed.ncbi.nlm.nih.gov/33075711/.

Binstead, Justin T, et al. “Anatomy, Bony Pelvis and Lower Limb, Calf.” In: StatPearls [Internet]. Treasure Island (FL), StatPearls Publishing, 29 May 2022, www.ncbi.nlm.nih.gov/books/NBK459362/.

Bordoni, Bruno, and Matthew Varacallo. “Anatomy, Bony Pelvis and Lower Limb, Gastrocnemius Muscle.” In: StatPearls [Internet]. Treasure Island (FL), StatPearls Publishing, 26 Apr. 2022, www.ncbi.nlm.nih.gov/books/NBK532946/.

Nsitem, Virginia. “Diagnosis and Rehabilitation of Gastrocnemius Muscle Tear: A Case Report.” The Journal of the Canadian Chiropractic Association, U.S. National Library of Medicine, Dec. 2013, www.ncbi.nlm.nih.gov/pmc/articles/PMC3845475/.

Travell, J. G., et al. Myofascial Pain and Dysfunction: The Trigger Point Manual: Vol. 2:the Lower Extremities. Williams & Wilkins, 1999.

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Peroneal Muscles, Weak Ankles, & Trigger Points

Peroneal Muscles, Weak Ankles, & Trigger Points

Introduction

The ankles and the lower legs have a casual relationship by allowing movement to the foot that causes an up-and-down motion. The lower leg has various muscles and tendons that surround the shin bone and allows the feet to take the body from one location to another. The peroneal muscles in the legs allow ankle stability to ensure that the weight from the host’s body doesn’t cause overload to the legs and ankles. However, factors like obesity, trauma, or overexerting can cause the peroneal muscles to be inflamed and develop issues like weak ankles or trigger points that can cause referred pain to the ankles and affect how a person walks. Today’s article examines the peroneal muscles, how weak ankles correlate with trigger points, and ways to strengthen the ankles while managing trigger points. We refer patients to certified providers that incorporate various techniques in the lower body extremities, like lower leg and ankle pain therapies correlating to trigger points, to aid many people dealing with pain symptoms along the peroneal muscles, causing weak ankles. We encourage and appreciate each patient by referring them to associated medical providers based on their diagnosis when it is appropriate. We understand that education is an excellent way when asking our providers intricated questions at the patient’s request and understanding. Dr. Alex Jimenez, D.C., only utilizes this information as an educational service. Disclaimer

The Peroneal Muscles On The Ankles

Have you been experiencing pain when walking around constantly? What about feeling a sharp or dull ache in the back or side of your legs? Or do you feel like falling when you are just standing around? Many people experiencing these issues on their legs and ankles could be dealing with trigger points along the peroneal muscles in the ankles. The peroneal muscles consist of two muscles in the lateral compartment of the lower legs: the peroneus longus and peroneus brevis. The peroneus longus is an important long muscle in the lower legs as it is at the top of the fibula and then runs down the outer leg while connecting to the foot. One of the primary functions of the peroneus longus is allowing plantarflex and evert the foot at the ankle. This means that the peroneus longus helps provide motor strength and range of motion to the ankles. 

 

 

The peroneus brevis is one of the shorter peroneal muscles in the legs that go down to the ankles and provides assistance to allow eversion to the foot and plantarflexion to the ankles. This shorter muscle is important since the ankle joint is relatively mobile and needs stability from the surrounding ligaments and muscles. These two muscles work together for ankle stability when walking and positioning when the body is moving. Studies reveal that depending on a person’s environment, the peroneal muscles allow support and stability to the ankle in various positions. A good example is if the foot is placed in a sloped position, the peroneal muscles and the surrounding ligaments help stabilize the ankle so it won’t induce pain, causing the individual not to fall over. 

 

Weak Ankles & Trigger Points

 

When factors like obesity, trauma, or injuries begin to affect the lower half of the body, it can cause instability in the legs and cause the surrounding muscles, tendons, and ligaments to be overstretched, take on more of an overload to the legs, or suffer from a muscle or tendon tear. These factors are associated with various issues that can invoke pain along with developing trigger points along the lower legs. When there are issues in the peroneal muscles, it can lead to muscle weakness in the ankles or “weak ankles,” which causes instability in the body and causes the individual to sprain their ankles. Studies reveal that when the peroneal tendons have a tear in the lower extremities, it can lead to lateral ankle pain that is often missed when examined. However, to that point, if the incision has been left untreated, it can lead to persistent ankle pain, instability, and ankle dysfunction. In “Myofascial Pain and Dysfunction,” written by Dr. Janet G. Travell, M.D., stated that when individuals suffer from weak ankles or have an ankle sprain, active trigger points can cause pain and tenderness to the ankles and cause the person to become unstable. If left untreated, it can cause them to lose balance and have foot drop and ankle fractures to their foot. The book also mentioned that any ruptures in the tendons and muscles might cause lateral compartment syndrome. When there is instability in the ankles, many people resort to using mobility aids like a cane or a walker to be mobile to compensate for the function lost in their feet.

 


Trigger Point Therapy On The Peroneal Muscles- Video

Do you feel the pain from the bottom of your feet to your ankles? Does it hurt to walk around for a short period? Or have you sprained your ankle, and there is a dull ache when you try to rotate? Some ankle issues are associated with trigger points affecting the peroneal muscles. The peroneal muscles help the lower legs by allowing eversion to the foot and plantarflexion to the ankles. The two muscles that make up the peroneal muscles are the peroneus longus and the peroneus brevis, and they, along with the other tendons and ligaments, help with ankle stability. Since the ankle is a mobile joint, it can succumb to sprains, tears, and instability in the body, allowing trigger points to develop and causing even more issues. The great news is that there are ways to manage trigger points along the peroneal muscles and reduce ankle instability. The video above shows where the peroneal muscles are located on the leg, where the trigger points are, and how to use K-tape to help support the ankle and prevent more injuries on this moveable joint.


Strengthening The Ankles & Managing Trigger Points

 

Instability in the ankles can be a bummer to many individuals that are on the move, but when it comes to treatment, it can prevent future injuries from re-occurring. Studies reveal that when pain specialists incorporate joint mobilization techniques and dry needling therapy into their patients, it can allow them to reduce the pain and disability to the ankles, thus managing the trigger points along the peroneal muscles. Another way many people can reduce pain in their peroneal muscles is by incorporating stretches and exercises to strengthen their ankles. This allows the peroneal muscles to be loose and gently stretched while slowly strengthening the ankles in a semi-lock position. When people utilize these techniques on their legs and ankles, it can bring mobility and stability back to the body without fear of falling or causing more issues in the ankles. 

 

Conclusion

As one of the most mobile skeletal joints in the lower body, the ankles work together with the legs to provide mobility and stability to the body. The lower legs have various muscles, tendons, and ligaments that travel down and help support the legs and ankles. One of the muscles that provide that support is the peroneal muscle. The peroneal muscles consist of two muscles known as the peroneus longus and peroneus brevis help with eversion to the foot and allow plantarflexion to the ankle. When a person has sprained their ankle, it causes the peroneal muscle to become overstretched and develop trigger points. The great news is that trigger points are treatable, and various treatments can reduce pain in the affected muscle. This allows stability and mobility back to the ankles and improves the body’s functionality.

 

References

Abd-Rasid, A F, and M Y Bajuri. “Isolated Peroneus Longus Tear – Commonly Missed Diagnosis of Lateral Ankle Pain: A Case Report.” Malaysian Orthopaedic Journal, U.S. National Library of Medicine, July 2020, www.ncbi.nlm.nih.gov/pmc/articles/PMC7513650/.

Basit, Hajira, et al. “Anatomy, Bony Pelvis and Lower Limb, Foot Peroneus Brevis Muscle.” In: StatPearls [Internet]. Treasure Island (FL), StatPearls Publishing, 8 Feb. 2022, www.ncbi.nlm.nih.gov/books/NBK535427/.

Lezak, Bradley, and Matthew Varacallo. “Anatomy, Bony Pelvis and Lower Limb, Calf Peroneus Longus Muscle.” In: StatPearls [Internet]. Treasure Island (FL), StatPearls Publishing, 25 Aug. 2022, www.ncbi.nlm.nih.gov/books/NBK546650/.

Salom-Moreno, Jaime, et al. “Trigger Point Dry Needling and Proprioceptive Exercises for the Management of Chronic Ankle Instability: A Randomized Clinical Trial.” Evidence-Based Complementary and Alternative Medicine : ECAM, U.S. National Library of Medicine, 2015, www.ncbi.nlm.nih.gov/pmc/articles/PMC4430654/.

Travell, J. G., et al. Myofascial Pain and Dysfunction: The Trigger Point Manual: Vol. 2:the Lower Extremities. Williams & Wilkins, 1999.

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Shin Splints & Myofascial Trigger Points

Shin Splints & Myofascial Trigger Points

Introduction

The legs are crucial for many individuals to move, jump, run, walk, and stand in various locations. The legs involve the thighs, hips, and knees as they work together to provide support and a range of movements for the body. For athletes, the legs allow them to run from one obstacle to another and kick the object to finish the game they are participating. Many individuals require strong leg muscles to keep the body balanced and stabilized from the upper body’s weight. One leg muscle that allows the body to be stabilized is the anterior tibialis muscle. When the legs suffer from various sports injuries or injuries in general, it can lead to issues like shin splints correlated with trigger points that can cause pain to the lower portion of the legs and can affect the body’s stability. Today’s article examines the anterior tibialis muscles, how shin splints are associated with myofascial trigger points, and various methods to treat shin splints. We refer patients to certified providers that incorporate various techniques in the lower body extremities, like lower leg pain therapies correlating to myofascial trigger point pain, to aid many people dealing with pain symptoms along the anterior tibialis muscles, causing shin splints. We encourage and appreciate each patient by referring them to associated medical providers based on their diagnosis, especially when appropriate. We understand that education is an excellent source to asking our providers intricated questions at the patient’s request. Dr. Alex Jimenez, D.C., only utilizes this information as an educational service. Disclaimer

What Is The Tibialis Anterior Muscles?

 

Have you been dealing with leg pain affecting your ability to move? Do you feel radiating pain going down to your feet? Or does even the smallest amount of pressure sends shooting pain from your knees to your feet? Many of these leg pain issues correlate to myofascial trigger points along the anterior tibialis muscles, mimicking shin splints. Studies reveal that the leg is divided into anterior, lateral, and posterior crural compartments. As one of the largest four muscles in the anterior compartment of the legs, the tibialis anterior is a thick muscle located in the front of the lateral tibia of the legs. The tibialis anterior has the muscle that allows the function to the lower leg and tendons that travel down to the ankle and foot. The anterior tibial muscle plays an important role in the lower leg through dorsiflexion and inversion of the foot. To that point, the anterior tibial muscle plays a key role in energy absorption when walking and maintaining balance.

 

Shin Splints Associated With Myofascial Trigger Points

Since the anterior tibial muscle plays a key role in energy absorption when it comes to walking and maintaining balance in the body, when the lower leg extremity muscles have been overused, it causes stress on the tibial anterior. It can lead to medial tibial stress syndrome or shin splints. Studies reveal that shin splints affect many athletes, especially runners, by causing pain and discomfort to the tibial anterior. This can cause mobility and balancing issues in the legs and lead to the development of myofascial trigger points in the anterior tibial muscle. Now, how do shin splints and myofascial trigger points correlate with each other?

 

 

Dr. Janet G. Travell, M.D., author of “Myofascial Pain and Discomfort: The Trigger Point Manual,” mentioned that one of the chief complaints many people have when experiencing myofascial trigger points would feel muscle weakness of dorsiflexion to the foot when walking. Other complaints include:

  • Falling
  • Dragging their feet
  • Ankle weakness

The book also mentioned that myofascial pain causes referred pain to the anterior tibial muscle, thus mimicking shin splints. The activation from myofascial trigger points causes an overload of the anterior tibial muscle, thus causing various pain issues in the legs and restricting mobility to the muscle itself.

 


An Overview Of Tibialis Anterior Trigger Points- Video

Have you been dealing with radiating pain from your knees to your feet? Do your legs feel heavy from walking a short distance? Or do your leg muscles feel cramps that hinder your ability to move? These pain-like issues are associated with the anterior tibialis muscle being affected by trigger points. Trigger points or myofascial pain syndrome can affect the worldwide population by affecting a muscle or muscle group in the body that can impair mobility, cause pain-like symptoms, and reduces a person’s overall sense of well-being. Trigger points along the tibialis anterior muscle cause mobility issues and mimic shin splint issues in the legs. All is not lost, however, as there are ways to reduce pain-like symptoms and help manage myofascial trigger points in the anterior tibialis muscle. The video above explains where the trigger points are located in the tibialis anterior through palpitation. By finding the trigger points in the affected muscle, doctors can refer patients to pain specialists who target trigger points and provide treatment to reduce the pain.


Various Methods Of Treating Shin Splints

 

There are various methods to treat the tibialis anterior when treating shin splints associated with trigger points. Studies reveal that one of the multiple ways to reduce shin splints is to strengthen the core hip muscles, improve running mechanics, and prevent lower-extremity overuse injuries. Muscle strength training allows the other muscles from the abdominals, gluteal, and hips to be stronger and reduce strain on the anterior tibialis muscles. Another method that many individuals should consider is to wear the appropriate footwear. Wearing the proper footwear can reduce the shock absorption to the feet and reduce the overloading forces on the anterior tibialis. These are two methods to manage trigger points and prevent shin splints from re-occurring in the legs. 

 

Conclusion

As one of the four leg muscles, the anterior tibialis is a large muscle located in front of the lateral tibia and travels down to the ankles and foot. This muscle plays an important role in the legs as it allows dorsiflexion and inversion of the foot while also playing a key role in energy absorption when walking and maintaining balance. When the anterior tibialis becomes overused, it can develop trigger points, which invoke shin splints in the legs. When the legs suffer from shin splints associated with trigger points, it can cause pain in the lower leg extremities and cause the body to become unstable. However, various methods can take the load off the tibialis anterior and help improve the body’s stability, allowing the individual to walk without feeling pain traveling up from their feet.

 

References

Deshmukh, Nikita S, and Pratik Phansopkar. “Medial Tibial Stress Syndrome: A Review Article.” Cureus, U.S. National Library of Medicine, 7 July 2022, www.ncbi.nlm.nih.gov/pmc/articles/PMC9356648/.

Galbraith, R Michael, and Mark E Lavallee. “Medial Tibial Stress Syndrome: Conservative Treatment Options.” Current Reviews in Musculoskeletal Medicine, U.S. National Library of Medicine, 7 Oct. 2009, www.ncbi.nlm.nih.gov/pmc/articles/PMC2848339/.

Juneja, Pallavi, and John B Hubbard. “Anatomy, Bony Pelvis and Lower Limb, Tibialis Anterior Muscles.” In: StatPearls [Internet]. Treasure Island (FL), StatPearls Publishing, 29 Aug. 2022, www.ncbi.nlm.nih.gov/books/NBK513304/.

Travell, J. G., et al. Myofascial Pain and Dysfunction: The Trigger Point Manual: Vol. 2:the Lower Extremities. Williams & Wilkins, 1999.

Zielinska, Nicol, et al. “Anatomical Variations of the Tibialis Anterior Tendon Insertion: An Updated and Comprehensive Review.” Journal of Clinical Medicine, U.S. National Library of Medicine, 19 Aug. 2021, www.ncbi.nlm.nih.gov/pmc/articles/PMC8396864/.

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Having Unquestionable Knee Pain? Could Be Trigger Points

Having Unquestionable Knee Pain? Could Be Trigger Points

Introduction

As one of the stabilizers for the body, the knees are located between the thighs and legs, allowing flexion and extension. The knees help the hips by supporting the upper body’s weight and allowing the legs to move from one place to another without feeling pain. The knee has various muscles and ligaments surrounding the knee joint, allowing the leg to be bent when active. One of the muscles is located behind the knee, known as the popliteus, and supports the legs. However, minor injuries or actions can affect the knees causing the joint to be in a “lock” position and develop myofascial trigger points that can induce muscle spasms in the knees. Today’s article focuses on the popliteus muscle, how knee pain is associated with trigger points, and how to manage knee pain through various treatments. We refer patients to certified providers that incorporate multiple methods in the lower body extremities, like knee pain treatments correlating to myofascial trigger points, to aid many people dealing with pain symptoms along the popliteus muscles. We encourage and appreciate each patient by referring them to associated medical providers based on their diagnosis, especially when appropriate. We understand that education is an excellent source to asking our providers intricated questions at the patient’s request. Dr. Alex Jimenez, D.C., only utilizes this information as an educational service. Disclaimer

What Is The Popliteus Muscle?

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Have you been dealing with pain behind your knees? Do you have issues bending your knees when climbing up or down the stairs? Or do your back knee muscles start to twitch uncontrollably, causing muscle spasms? Many knee issues correlate with various factors that can affect the popliteus muscle and develop trigger points. The popliteus is a small muscle with a very important job as it is a major stabilizing muscle to the knees. The popliteus muscle originates from the lateral side of the femur and inserts itself into the posterior surface of the tibia. Some attachments are between the popliteus and lateral meniscus, allowing the knees to be in motion and providing flexion without pain and entrapment. Additional studies reveal that when a person exercises, the popliteus’s basic function helps bring about and maintain internal rotation of the tibia on the femur. The popliteus also helps prevent the foot from external rotation and allows the individual to stand correctly. However, injuries to the knee could overstretch the popliteus muscle and cause mobility issues to the knee flexion.

 

Knee Pain Associated With Trigger Points

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When dealing with knee pain, it could often be a joint disorder like osteoarthritis or a musculoskeletal condition like sciatica pain associated with the knee. These issues could be due to normal factors like constantly sitting down or bending down to lift heavy objects that cause the knees to buckle. However, when the popliteus muscle has been continuously overused from being bent, it can form tiny nodules known as trigger points to cause knee pain. Studies reveal that trigger points on the muscles surrounding the knee are often ignored during a clinical diagnosis. Trigger points cause referred pain to the surrounding muscles, accompanied by various sensory sensations like heaviness, tingling, and hypersensitivity to the popliteus muscle. In “Myofascial Pain and Dysfunction,” written by Dr. Travell, M.D. stated that one of the chief complaints that many patients often talk to their doctors about is the pain they feel in the back of their knees when they are in a crouch position. The book also states when normal actions like running or twisting have overloaded the popliteus muscle, it can cause trauma or strain to the popliteus muscle and tear the posterior cruciate ligament to the knees.

 


How To Find Trigger Points In The Popliteus- Video

Have you been having knee issues that make walking difficult for a long period? Do you feel like your knees are locking up constantly? What about feeling unstable when standing or carrying objects around? These issues that affect the knees are associated with trigger points along the popliteus muscles. The popliteus muscle is small, located at the back of the knees, and assists with knee flexion. When the popliteus muscle becomes overused, it can cause trigger points to form and cause knee issues. Studies reveal that various issues, like tendon injuries, are associated with repetitive mechanical stresses that can cause degenerative knee lesions. Any trauma or muscle strain can affect the knee’s function of flexing and bending without pain for trigger points to form along the popliteus muscles. The video above focuses on the popliteus muscle, where the trigger points are located, and where the referred pain patterns are situated in the knees. On the bright side, all is not lost, as various treatments offer ways to manage knee pain associated with trigger points.


Managing Knee Pain Through Various Treatments

 

When it comes to knee pain, many individuals will apply an ice or heat compress to allow the surrounding muscles to relax while reducing the pain and swelling. Other individuals use over-the-counter medicines to eliminate the pain for a few hours. While these work at managing knee pain, various treatments target trigger points and can help improve flexion mobility back to the knees. Studies reveal that muscle stretching on the popliteus muscle contributes to joint position sense to knee joint stability and function. Stretching the popliteus muscles can reduce the pain in the back of the knee while elongating the muscle fibers to manage trigger points from forming again. Other treatments that people can do to avoid trigger points from returning is to avoid walking or running in a lateral sloped area to prevent the knees from locking up. Incorporating these treatments to prevent knee issues and allow the knee to function properly. 

 

Conclusion

The knees are one of the stabilizers in the body that are located between the thighs and legs, allowing flexion and extension. As a small muscle located in the back of the knees, the popliteus stabilizes the knees and enables them to be in motion without pain. However, when the popliteus muscle becomes overstretched and overused, it can develop trigger points in the popliteus that invoke referred pain to the surrounding muscles and cause the knees to lock up. To that point, it causes the body to be unstable and mimics knee pain issues. Fortunately, trigger points are treatable through various treatments that help relieve the pain and reduce the trigger points from returning. When these treatments are utilized on the knees, the surrounding muscles regain flexion mobility in the lower body.

 

References

English, S, and D Perret. “Posterior Knee Pain.” Current Reviews in Musculoskeletal Medicine, U.S. National Library of Medicine, 12 June 2010, www.ncbi.nlm.nih.gov/pmc/articles/PMC2941578/.

Ghaffarinejad, Farahnaz, et al. “Effect of Static Stretching of Muscles Surrounding the Knee on Knee Joint Position Sense.” British Journal of Sports Medicine, U.S. National Library of Medicine, Oct. 2007, www.ncbi.nlm.nih.gov/pmc/articles/PMC2465159/.

Hyland, Scott, and Matthew Varacallo. “Anatomy, Bony Pelvis and Lower Limb, Popliteus Muscle.” In: StatPearls [Internet]. Treasure Island (FL), StatPearls Publishing, 6 June 2022, www.ncbi.nlm.nih.gov/books/NBK526084/.

Mann, R A, and J L Hagy. “The Popliteus Muscle.” The Journal of Bone and Joint Surgery. American Volume, U.S. National Library of Medicine, Oct. 1977, pubmed.ncbi.nlm.nih.gov/908724/.

Sánchez Romero, Eleuterio A, et al. “Prevalence of Myofascial Trigger Points in Patients with Mild to Moderate Painful Knee Osteoarthritis: A Secondary Analysis.” Journal of Clinical Medicine, U.S. National Library of Medicine, 7 Aug. 2020, www.ncbi.nlm.nih.gov/pmc/articles/PMC7464556/.

Travell, J. G., et al. Myofascial Pain and Dysfunction: The Trigger Point Manual: Vol. 2:the Lower Extremities. Williams & Wilkins, 1999.

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Dealing With Upper Thigh Pain? Could Be Trigger Points In the Hamstrings

Dealing With Upper Thigh Pain? Could Be Trigger Points In the Hamstrings

Introduction

Many individuals utilize their lower muscles to move around and stay active as each muscle does its job and allows mobility to the hips and thighs. In sports, the thigh muscles are utilized constantly to extend the legs and bend the knees, allowing a powerful force to win any sports competition. At the same time, various sports injuries can occur to the hips, thighs, and legs and can affect the muscles causing pain and discomfort to the lower extremities. A hamstring injury is one of the most common injuries that can affect the thighs, which can cause many athletes to be taken out of their favorite sport to recover from the injury. Today’s article looks at the hamstring muscle, how trigger points correlate with a hamstring strain, and how various stretches can reduce muscle strain on the hamstrings. We refer patients to certified providers who incorporate multiple methods in the lower body extremities, like upper thigh and hip pain treatments correlating to myofascial trigger point pain, to aid individuals dealing with pain symptoms along the hamstring muscles. We encourage and appreciate patients by referring them to associated medical providers based on their diagnosis, especially when appropriate. We understand that education is an excellent solution to asking our providers complex questions at the patient’s request. Dr. Jimenez, D.C., utilizes this information as an educational service only. Disclaimer

What Are The Hamstring Muscles?

 

Do you experience pain in the back of your upper thigh? When walking from one place to another, do you hear a popping sound in the back of your thigh? Or are you dealing with muscle tenderness in the back of your upper thigh? Many of these symptoms correlate with issues affecting the hamstrings causing trigger points to affect the upper thighs. As one of the most complex muscles comprising three muscles (semitendinosus, semimembranosus, biceps femoris), the hamstrings play a crucial part in daily activities. From simple actions like standing to explosive movements like sprinting or jumping, the hamstrings are known as posterior thigh muscles that begin from the pelvis and run behind the femur bone and cross the femoroacetabular and tibiofemoral joints. The hamstring muscles in the body play a prominent role in hip extension and is a dynamic stabilizer of the knee joint. To that point, the hamstring muscles are the most susceptible muscle that succumbs to injuries that can lead to disability in the legs and affect daily activities.

 

Hamstring Strain & Trigger Points

 

Since the hamstrings are the most susceptible muscles that can succumb to injuries, it takes a while for the muscle to heal, depending on the severity of the damage. Studies reveal that the hamstrings can occur injuries when a person is running or sprinting due to their anatomic arrangement, which causes the muscles to strain. To that point, depending on how much force has impacted the hamstrings, the injuries can lead to 3 of the following:

  • Grade 1: Mild pain or swelling (no loss of function)
  • Grade 2: Identifiable partial tissue disruption with moderate pain and swelling (minimal loss of function)
  • Grade 3: Complete disruption of the tissue with severe pain and swelling (total loss of function)

The pain that patients experience can be painful when walking, causing them to limp. In “Myofascial Pain and Dysfunction,” written by Dr. Janet G. Travell, M.D., stated that when patients are dealing with pain in their hamstrings, it could potentially be associated with trigger points along the three muscles, causing pain and disability in the upper thighs. The book also mentioned that when trigger points affect the hamstrings, it can lead to muscle inhibition, compromising hip stability. Another issue that trigger points associated with hamstring strain causes in the body are that when individuals are sitting down are likely to experience posterior pain in the buttock, upper thighs, and back of the knees. Luckily, there are various ways to reduce the pain along the hamstring muscles. 

 


Trigger Point Of The Week: Hamstrings- Video

Have you dealt with pain along the back of your upper thighs? Does it feel uncomfortable when you are sitting down? Or do your hamstrings ache or feel tight after running for a long period? People dealing with issues in their hamstrings could be dealing with muscle strain associated with trigger points. The hamstring muscles play a vital role in the body as it allows the individual to walk, run, bend the knees and even extend the legs. The hamstring muscles are also the most susceptible to injury, causing disability to the legs. Studies reveal that trigger points associated with the hamstring muscles can lead to soreness or irritability in the muscle fibers that may interfere with the biomechanics and normal functioning of the lower limbs. The video above explains where the hamstrings are located and how the trigger points can cause referred pain to the hamstrings. To that point, trigger points can affect a person’s ability to walk and affect the surrounding muscles in the lower body while mimicking other chronic conditions.


Various Stretches To Reduce Muscle Strain On The Hamstrings

 

When the hamstrings become injured, the healing rate usually depends on how severe the injury is in the hamstrings. If a hamstring injury is mild, the tears or strains can heal within about three to eight weeks, and if the hamstring injury is severe, the tears or strains could be long as three months. When the hamstrings are tense and on the verge of tearing, many people should stop overusing the muscle. Various stretches can reduce muscle strain on the hamstrings and relieve tension from the hamstrings to allow mobility back to the legs. Studies reveal that manual ischemic compression on the upper thigh muscles can significantly reduce pain in the lower limbs. This allows the individual to manage the trigger points associated with the hamstrings and reduce the chances of them re-occurring in the legs.

 

Conclusion

As the most important muscle in the lower body extremities, the hamstrings play a crucial part in the body as they allow the individual to walk, run, and stand without feeling pain. However, even though they are important muscles, they are susceptible to injuries. When the hamstrings become injured, the recovery process varies depending on the severity and can develop trigger points along the muscle fibers. To that point, it causes referred pain along the upper thigh muscle and affects a person’s ability to walk. Fortunately, incorporating various stretches to the hamstrings can alleviate the pain and reduce the trigger points from re-occurring in the muscle. This allows mobility back to the legs, and many individuals can resume their daily activities.

 

References

Esparza, Danilo, et al. “Effects of Local Ischemic Compression on Upper Limb Latent Myofascial Trigger Points: A Study of Subjective Pain and Linear Motor Performance.” Rehabilitation Research and Practice, Hindawi, 4 Mar. 2019, www.ncbi.nlm.nih.gov/pmc/articles/PMC6425406/.

Poudel, Bikash, and Shivlal Pandey. “Hamstring Injury – Statpearls – NCBI Bookshelf.” In: StatPearls [Internet]. Treasure Island (FL), StatPearls Publishing, 28 Aug. 2022, www.ncbi.nlm.nih.gov/books/NBK558936/.

Rodgers, Cooper D, and Avaias Raja. “Anatomy, Bony Pelvis and Lower Limb, Hamstring Muscle.” In: StatPearls [Internet]. Treasure Island (FL), StatPearls Publishing, 29 Jan. 2022, www.ncbi.nlm.nih.gov/books/NBK546688/.

Thummar, Ravindra C, et al. “Association between Trigger Points in Hamstring, Posterior Leg, Foot Muscles and Plantar Fasciopathy: A Cross- Sectional Study.” Journal of Bodywork and Movement Therapies, U.S. National Library of Medicine, 7 Aug. 2020, pubmed.ncbi.nlm.nih.gov/33218537/.

Travell, J. G., et al. Myofascial Pain and Dysfunction: The Trigger Point Manual: Vol. 2:the Lower Extremities. Williams & Wilkins, 1999.

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