Individuals who engage in sports and physical activities that involve lunging forward while running or jumping can sustain a plantaris muscle injury. Can understanding the anatomy of the back of the leg and the symptoms help diagnose and treat plantar muscle injuries?
Plantaris Muscle
The plantaris muscle is a long, narrow muscle in the calf that runs along the back of the leg. It’s part of the Triceps Surae, a group of muscles in the calf that, along with the gastrocnemius and soleus muscles, makes up the bulk of the back of the leg. It is located in the superficial posterior compartment of the leg. Strains or tears of the plantaris muscle at the back of the leg can cause pain and swelling, similar to a calf strain or Achilles tendon tear. Individuals may feel immediate pain, cramping, and other symptoms.
Anatomy
The gastrocnemius and soleus muscles are the major muscles, with the soleus located deeper in the leg. Together, they form the Achilles tendon, which blends into a tendon in the back of the heel and attaches to the heel bone/calcaneus. When the calf muscles contract, they point the foot downward, propelling the body forward when walking, running, and sprinting. The plantaris muscle and tendon sit more or less in the center of the calf, between the two heads of the gastrocnemius. Around 7% to 20% of the population are born without plantaris muscles. There are variations, such as having a double- or triple-headed plantaris muscle. (Olewnik Ł. et al., 2020) However, individuals that do not have the muscle or have a variation have not been shown to affect long-term or short-term mobility.
Symptoms
Plantaris muscle ruptures are the most common injury and occur often during running or jumping. (Spang C. et al., 2016) Many who sustain this injury are athletes who have to lunge forward. Common symptoms include:
Swelling and bruising in the back of the calf area.
Cramping in the calf muscle.
Spasm sensations of the calf muscle.
Symptoms of a plantaris muscle strain are less severe, with the common signs being tightness and pain during and after physical activity.
Diagnosis
Plantaris muscle tears differ from Achilles tendon tears because the foot can be pointed downward following the rupture, whereas an Achilles tear cannot. Plantaris ruptures can also be confused with a blood clot in the large veins of the calf, called deep vein thrombosis/DVT. (Rohilla S. et al., 2013) Tests like MRI or ultrasound can be performed to confirm or exclude a plantaris rupture. Both can be useful for verifying whether the injury is a strain or tear and identifying other possible causes of calf pain.
Treatment
Treatment is typically non-surgical. While the injuries can cause pain and disability, the symptoms almost always resolve with conservative treatments and therapies. Rest, ice, compression, and elevation are the first line used and may be all that is needed for a muscle strain. Short-term use of NSAIDs may be recommended for a strain or tear to reduce pain and inflammation. (Morelli K. M. et al., 2018) If the pain is profound or there is a tear, patients may require short-term immobilization or the use of a crutch for the pain to subside. With the assistance of a physical therapist, sports chiropractor, and athletic trainer, gradual increases in mobility and strength can be obtained. Symptoms usually gradually resolve over several weeks. Full recovery may take up to eight weeks, depending on the severity of the injury.
Injury Medical Chiropractic and Functional Medicine Clinic works with primary healthcare providers and specialists to develop customized treatment programs through an integrated approach to treating injuries and chronic pain syndromes, improving flexibility, mobility, and agility, relieving pain, and helping individuals return to normal activities. If other treatments are needed, Dr. Jimenez has teamed up with top surgeons, clinical specialists, medical researchers, and rehabilitation providers to provide the most effective treatments.
Control Foot Motion with Custom Orthotics
References
Olewnik, Ł., Zielinska, N., Karauda, P., Tubbs, R. S., & Polguj, M. (2020). A three-headed plantaris muscle: evidence that the plantaris is not a vestigial muscle?. Surgical and radiologic anatomy : SRA, 42(10), 1189–1193. https://doi.org/10.1007/s00276-020-02478-8
Spang, C., Alfredson, H., Docking, S. I., Masci, L., & Andersson, G. (2016). The plantaris tendon: a narrative review focusing on anatomical features and clinical importance. The bone & joint journal, 98-B(10), 1312–1319. https://doi.org/10.1302/0301-620X.98B10.37939
Rohilla, S., Jain, N., & Yadav, R. (2013). Plantaris rupture: why is it important?. BMJ case reports, 2013, bcr2012007840. https://doi.org/10.1136/bcr-2012-007840
Morelli, K. M., Brown, L. B., & Warren, G. L. (2018). Effect of NSAIDs on Recovery From Acute Skeletal Muscle Injury: A Systematic Review and Meta-analysis. The American journal of sports medicine, 46(1), 224–233. https://doi.org/10.1177/0363546517697957
Should individuals with existing gastrointestinal problems eat bananas?
Bananas
Bananas can be easy to digest and are often recommended for nausea and diarrhea, however, not everyone can tolerate them. (MedlinePlus. 2021)
Bananas are high in fructose, sorbitol, and soluble fiber, which makes them a common trigger for gastrointestinal problems.
Additionally, individuals not used to eating a high-fiber diet may find it helpful to gradually increase fiber and drink more water to alleviate unpleasant symptoms.
If there is a suspicion of intolerance, IBS, or malabsorption, it is recommended to speak with a healthcare provider for an evaluation.
Bananas can make the stomach hurt due to:
Irritable bowel syndrome (IBS)
Cramping
Gas
Bloating
Other gastrointestinal (GI) problems.
Individuals can experience stomach discomfort if there is a fructose intolerance or a rare banana allergy.
Stomach Pain
Bananas are used to replenish potassium and other essential nutrients lost from vomiting or diarrhea.
Some individuals can experience bloating and gas after eating them.
One reason is because of their soluble fiber content.
Soluble fiber dissolves in water and is more readily fermented in the colon than insoluble fiber.
Bananas also contain sorbitol – a naturally occurring sugar that acts as a laxative and can cause gas, bloating, and diarrhea when consumed in large amounts. (U.S. Food and Drug Administration. 2023)
Irritable Bowel Syndrome – IBS
Bananas can be a common trigger food for individuals with IBS.
Bananas are also high in fructose/simple sugar especially when they have overripened.
Individuals who have IBS are advised to avoid bananas because they can trigger many of the same side effects as undigested lactose/sugar in milk. (Johns Hopkins Medicine. 2023)
Ripe bananas are considered to be high in FODMAPS – fermentable oligosaccharides, disaccharides, monosaccharides, and polyols.
Individuals following a low FODMAP diet to manage IBS may want to avoid or limit consumption.
Fructose malabsorption is when the body cannot digest or absorb fructose correctly. This causes bloating gas and abdominal discomfort.
Hereditary fructose intolerance is very rare. It happens when the liver cannot assist in the breakdown of fructose.
This condition often causes more severe symptoms and requires additional treatment besides removing fructose from an individual’s diet. (UW School of Medicine and Public Health. 2019)
Most can tolerate small amounts of fructose found in fruits like bananas.
If you’re eating bananas that are too green or unripe, you may also experience stomach discomfort.
Unripened bananas contain high amounts of resistant starch. In large quantities, this can cause mild symptoms like gas and bloating. (Jennifer M Erickson, et al., 2018)
Jackson Siegelbaum Gastroenterology. Colon gas and flatus prevention.
U.S. Food and Drug Administration. Sorbitol.
Capili, B., Anastasi, J. K., & Chang, M. (2016). Addressing the Role of Food in Irritable Bowel Syndrome Symptom Management. The journal for nurse practitioners: JNP, 12(5), 324–329. https://doi.org/10.1016/j.nurpra.2015.12.007
Johns Hopkins Medicine. 5 foods to avoid if you have IBS.
Monash University. Bananas re-tested.
Dayıoğlu A, Akgiray S, Nacaroğlu HT, Bahçeci Erdem S. The clinical spectrum of reactions due to banana allergy. BMB. 2020;5(2):60-63. doi: 10.4274/BMB.galenos.2020.04.013
Family Medicine Austin. Banana allergy.
UW School of Medicine and Public Health. Fructose-restricted diet.
Erickson, J. M., Carlson, J. L., Stewart, M. L., & Slavin, J. L. (2018). The Fermentability of Novel Type-4 Resistant Starches in In Vitro System. Foods (Basel, Switzerland), 7(2), 18. https://doi.org/10.3390/foods7020018
The Johns Hopkins Guide to Diabetes. What is resistant starch?
Calf pain is common in individuals who spend a lot of time on their feet, whether standing at work, school, or training athletes. The calf muscle/s take on a tremendous amount of load throughout the day. Climbing stairs, jogging, running, and hiking increase strain on the muscles. In most cases, calf pain results from an overuse injury of the calf muscles. Improper footwear can also contribute to issues around the foot and ankle that include:
Tightness
Loss of strength of the foot
Decreased mobility
Short or tight calves can lead to dysfunctional movement, cramping symptoms, chronic pain, and stiffness. A combination of chiropractic active release treatment and physical therapy can help quickly eliminate calf pain.
Anatomy
The calves are comprised of two muscles, the gastrocnemius, and soleus.
The gastroc originates just above the knee.
The soleus is below the knee.
They both insert on the back of the ankle as they join to form the Achilles tendon. The gastrocnemius is the power muscle used for explosive movements like jumping. The soleus muscle is predominately a slow-twitch muscle. This means it is very active during extended activities, like standing, walking, exercising, and running. When dealing with calf and ankle issues, other muscles can also contribute. These include:
The posterior tibialis lies deep in the inner portion of the calf and plays a role in foot and ankle function.
Most commonly, calf pain is caused by the overuse of the calf muscles. This is often the result of the consistent pounding of the feet and lower legs from standing, walking, and working. Over time, the repetitive pounding can cause tiny tears in the muscles of the lower legs and calves. If detected, early rest and recovery are recommended to allow the muscles to relax, loosen, and heal. However, repeated use can lead to more severe injury without proper treatment, like compartment syndrome. Certain types of calf pain can signify a medical emergency that requires immediate treatment.
Compartment Syndrome
A tough and fibrous covering surrounds the calf called the fascia. During physical activity or exercise, blood flows into these muscles, causing them to increase in size. If the fascia cannot stretch enough when these muscles enlarge, pain and tightness can develop. This is known as chronic posterior compartment syndrome. The discomfort typically goes away when the activity stops but is likely to return without proper treatment.
Calf Overuse Injury
Soreness, tightness, and pain are usually felt along the back or inside of the lower leg. The calf muscles are generally not painful to touch but maybe tender when deep pressure is applied. Calf pain and tightness often come with extended physical activity, exercise and disappear once the activity is stopped. If the injury becomes chronic, calf stiffness can present even when not active, along with numbness and/or tingling in the lower leg or foot.
Treatment
It is recommended not to ignore any discomfort, pain, and stiffness in the calves. Continued overuse can lead to scar tissue formation and chronic pain potential without proper care. Active Release – ART, and chiropractic effectively treat this type of injury. ART breaks up scar tissue, returning normal function to the calf muscles. And chiropractic loosens up stiff joints in the hips, ankles, and feet that may be contributing to wear and tear on the calves. Together they can quickly and eliminate calf pain. Part of a treatment plan includes:
Aerobic exercise substantially impacts the body’s muscles’ energy production system and cardiovascular adaptation. The blood delivers oxygen to the muscle cells to produce energy that powers all the exercise being done. Aerobic exercise primarily relies on oxidative energy production, which takes place within the cells called mitochondria. Aerobic exercise also breaks down fat molecules for energy, which can only happen within mitochondria.
Aerobic exercise training improves the muscle cells’ ability to burn fat by generating more mitochondria and enhancing their functionality. Specifically, the body burns more fat than usual in the hours following each training session.
With more precise quality and quantity of fat-burning machinery, aerobic training can increase the resting metabolic rate, resulting in more calories burned.
High-intensity aerobic exercise also increases the excess post-exercise oxygen consumption – EPOC, resulting in increased calorie burn in addition to what was burned during the exercising.
References
Alfredson, H et al. “Heavy-load eccentric calf muscle training for the treatment of chronic Achilles tendinosis.” The American journal of sports medicine vol. 26,3 (1998): 360-6. doi:10.1177/03635465980260030301
Bright, Jacob Michael et al. “Ultrasound Diagnosis of Calf Injuries.” Sports health vol. 9,4 (2017): 352-355. doi:10.1177/1941738117696019
Campbell, John T. “Posterior calf injury.” Foot and ankle clinics vol. 14,4 (2009): 761-71. doi:10.1016/j.fcl.2009.07.005
Green, Brady, and Tania Pizzari. “Calf muscle strain injuries in sport: a systematic review of risk factors for injury.” British journal of sports medicine vol. 51,16 (2017): 1189-1194. doi:10.1136/bjsports-2016-097177
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