Femoroacetabular impingement, or FAI, is a medical state where additional bone develops in a single or multiple of the bones which make up the hip joint, giving the bones an irregular form. As a result, the bones may rub against each other since they do not fit together properly. This friction can ultimately harm the joint, causing pain, discomfort and limiting movement.
Anatomy
The hip is commonly characterized as a ball-and-socket joint. The acetabulum, which is part of the large pelvis bone, forms the socket of the joint. The ball of the joint is the femoral head, that is the upper end of the thighbone or femur. A type of soft tissue, known as articular cartilage, covers the surface of the ball-and-socket hip joint.
Articular cartilage makes a smooth, low friction surface which aids the bones to slide easily across each other through movement. The acetabulum is also lined by strong fibrocartilage, known as the labrum. The labrum shapes a gasket across the socket, forming a tight seal to provide stability as well as to help properly support the hip joint.
With femoroacetabular�impingement, bone spurs or bone overgrowth, surround the femoral head, across the acetabulum. The extra bone causes the hip joints to come into close contact and prevents them from gliding smoothly and without friction during movements. With age, this can cause labrum tears and osteoarthritis, or the breakdown of articular cartilage.
Types of Femoroacetabular Impingement
According to doctors, there are three types of femoroacetabular impingement, or FAI: pincer, cam,�and combined impingement.
Pincer:�This variety of impingement develops when bone extends outwards from the standard rim of the acetabulum. As a result, the labrum is crushed beneath the rim of the acetabulum.
Cam: In cam,�impingement of the femoral head causes the joint to be unable to rotate smoothly. A bump forms on the border of the femoral head which grinds the cartilage inside the acetabulum.
Combined: Combined impingement suggests that both pincer and cam types of femoroacetabular�impingement are found.
Causes of FAI
Abnormal development of the hip bones and joints throughout childhood is the most common cause of femoroacetabular impingement. However, it is the deformity of a pincer bone spur�or a cam bone spur which leads to joint damage and hip pain. If the hip bones and joints do not form normally, there’s little which can be done to prevent femoroacetabular�impingement.
Many people may have FAI and never�experience symptoms from the condition. When symptoms develop, however, it generally indicates that there is damage to the cartilage or labrum and the health issue may progress. Moreover, athletes are more likely to experience symptoms of femoroacetabular impingement, although exercise does not cause FAI.
Symptoms of FAI
The most common symptoms of femoroacetabular impingement include: pain and discomfort; stiffness; and limping.�Pain associated with FAI frequently occurs in the region of the groin, although it may also occur toward the exterior of the hip. Twisting, turning, and squatting may cause a sharp, stabbing pain while the pain is generally described as a dull ache.
Diagnosis of FAI
For the first consultation, the healthcare professional will discuss the patient’s hip symptoms and talk about their general health and wellness. They will also examine the patient’s hip. As part of the physical evaluation, the doctor will conduct an FAI impingement test by bringing up the patient’s knee then rotating it towards their opposite shoulder. If this recreates hip pain, the test is positive for femoroacetabular impingement.
Imaging Diagnostics
The healthcare professional may also order imaging diagnostics to help determine whether the patient has femoroacetabular impingement, or FAI. The following imaging diagnostics below can be used.
X-rays: These will show whether the hip has shaped bones of FAI, and provide images of the bone. X-rays may also reveal signs of arthritis.
Computed tomography (CT) scans: More comprehensive than a plain x-ray, CT scans help the healthcare professional determine the specific contour of the patient’s hips.
Magnetic resonance imaging (MRI) scans: These tests create pictures of soft tissue. They will help the doctor find harm to the labrum and articular cartilage. Injecting dye into the joint may make the damage or injury show up more clearly.
Local anesthetic: The doctor can also inject a numbing medication into the hip joint as a test. It affirms that FAI is the problem if temporary pain relief is provided by the local anesthetic.
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Femoroacetabular impingement, or FAI, commonly affects the hip joint of many young and middle-aged adults. FAI occurs when the ball-and-socket joint of the hip causes abnormal friction and restricts range of movement. Furthermore, damage or injury to the articular cartilage or the labrum can affect the femoral head or the acetabular socket. Treatment options for FAI can range from alternative treatment options to surgery.
Dr. Alex Jimenez D.C., C.C.S.T. Insight
Treatment for Femoroacetabular Impingement
Non-Surgical Treatment
Lifestyle modifications:�The healthcare professional may recommend changes in physical activities that cause symptoms, simply altering the patient’s regular everyday routine.
Drugs and/or medications: The use of drugs and/or medications, such as ibuprofen, can be offered to help decrease painful symptoms and inflammation. The relief may only be temporary.
Alternative treatment options:�Treatment approaches like chiropractic care and physical therapy can help provide pain relief to patients with femoroacetabular impingement. Moreover, specific stretches and exercises can strengthen the muscles which support the joint and can boost range of movement. This can help relieve some stress and pressure on articular cartilage or the labrum.
Surgical Treatment
If imaging diagnostics and physical evaluations reveal additional hip joint damage and/or injury as well as the presence of other conditions and non-surgical treatment does not relieve the patient’s pain, the healthcare professional may recommend surgical interventions or surgery.
Arthroscopy
Femoroacetabular impingement can be treated with arthroscopic surgery. Arthroscopic surgical interventions are performed with thin instruments using little incisions. The surgeon then utilizes a small camera to look�inside the hip. The doctor can fix or clean out any damage to the labrum and articular cartilage by shaving the bulge on the femoral head and also trimming the bony rim of the acetabulum.
As the results of operation enhance, physicians will recommend surgery that is earlier for FAI. Surgical techniques continue to progress and at the future, computers may be utilized to guide the physician in reshaping and correcting the hip. The scope of our information is limited to chiropractic as well as to spinal injuries and conditions. To discuss the subject matter, please feel free to ask Dr. Jimenez or contact us at�915-850-0900�.
Curated by Dr. Alex Jimenez
Additional Topics: Chiropractic for Athletes with Back Pain
Back pain�is one of the most prevalent causes of disability and missed days at work worldwide. Back pain is the second most common reason for doctor office visits, outnumbered only by upper-respiratory infections. Approximately 80 percent of the population will experience back pain at least once throughout their life. The spine is a complex structure made up of bones, joints, ligaments, and muscles, among other soft tissues. Because of this, injuries and/or aggravated conditions, such as�herniated discs, can eventually lead to symptoms of back pain. Sports injuries or automobile accident injuries are often the most frequent cause of back pain, however, sometimes the simplest of movements can have painful results. Fortunately, alternative treatment options, such as chiropractic care, can help ease back pain through the use of spinal adjustments and manual manipulations, ultimately improving pain relief.
Macroscopic & Microscopic Appearance of Normal vs. Damaged Articular Hyaline Cartilage by DJD
Hip Osteoarthritis (OA) aka Osteoarthrosis
Symptomatic and potentially disabling DJD
Progressive damage and loss of the articular cartilage causing denudation and eburnation of articular bone
Cystic changes, osteophytes, and gradual joint destruction
Develops d/t repeated joint loading and microtrauma
Obesity, metabolic/genetic factors
Secondary Causes: trauma, FAI syndrome, osteonecrosis, pyrophosphate crystal deposition, previous inflammatory arthritis, Slipped Capital Femoral Epiphysis, Leg-Calves-Perthes disease in children, etc.
Hip OA, 2nd m/c after knee OA. Women>men
88-100 symptomatic cases per 100000
Radiography is the Modality of Choice for the Dx and Grading of DJD
Special imaging is not required unless other complicating factors exist
The acetabular-femoral joint is divided into superior, axial and medial compartments/spaces
Normal joint space at the superior compartment should be 3-4-mm on the AP hip/pelvis view
Understanding the pattern of hip joint narrowing/migration helps with the DDx of DJD vs. Inflammatory arthritis
In DJD, m/c hip narrowing is superior-lateral (non-uniform) vs. inflammatory axial (uniform)
AP Hip Radiograph Demonstrates DJD
With a non-uniform loss of joint space (superior migration), large subcortical cysts and subchondral sclerosis
Radiographic features:
Like with any DJD changes: radiography will reveal L.O.S.S.
L: loss of joint space (non-uniform or asymmetrical)
O: osteophytes aka bony proliferation/spurs
S: Subchondral sclerosis/thickening
S: Subcortical aka subchondral cysts “geodes.”
Hip migration is m/c superior resulting in a “tilt deformity.”
Radiographic Presentation of Hip OA May Vary Depending On Severity
Mild OA: mild reduction of joint space often w/o marked osteophytes and cystic changes
During further changes, collar osteophytes may affect femoral head-neck junction with more significant joint space loss and subchondral bone sclerosis (eburnation)
Cyst formation will often occur along the acetabular and femoral head subarticular/subchondral bone “geodes” and usually filled with joint fluid and some intra-articular gas
Subchondral cysts may occasionally be very large and DDx from neoplasms or infection or other pathology
Coronal Reconstructed CT Slices in Bone Window
Note moderate joint narrowing that appears non-uniform
Sub-chondral cysts formation (geodes) are noted along the acetabular and femoral head subchondral bone
Other features include collar osteophytes along head-neck junction
Dx: DJD of moderate intensity
Referral to the Orthopedic surgeon will be helpful for this patient
AP Pelvis (below the first image), AP Hip Spot (below the second image) CT Coronal Slice
Note multiple subchondral cysts, severe non-uniform joint narrowing (superior-lateral) and subchondral sclerosis with osteophytes
Advanced hip arthrosis
Severe DJD, Left Hip
When reading radiological reports pay particular attention to the grading of hip OA
Most severe (advanced) OA cases require total hip arthroplasty (THA)
Refer your patients to the Orthopedic surgeon for a consultation
Most mild cases are a good candidate for conservative care
Hip Arthroplasty aka Hip Replacement
Can be total or hemiarthroplasty
THA can be metal on metal, metal on polyethylene and ceramic on ceramic
A hybrid acetabular component with polyethylene and metal backing is also used (above right image)
THA can be cemented (above right image) and non-cemented (above-left image)
Non-cemented arthroplasty is used on younger patients utilizing porous metallic parts allowing good fusion and bone ingrowth into the prosthesis
Failed THA May Develop
Most develop within the first year and require revision
Femoral stem may fracture (above left)
Postsurgical infection (above right)
Fracture adjacent to the prosthesis (stress riser)
Particle disease
Femoroacetabular Impingement Syndrome
(FAI): abnormality of normal morphology of the hip leading to eventual� cartilage damage and premature DJD
Clinically:�hip/groin pain aggravated by sitting (e.g., hip flexed & externally rotated). Activity related pain on axial loading esp. with hip flexion (e.g., walking uphill)
Pincer-type�acetabulum: > in middle age women potentially� many causes
CAM-type deformity:�> in men in 20-50 m/c 30s
Mixed type (pincer-CAM) is most frequent
Up until the 90s, FAI was not well-recognized
FAI Syndrome
CAM-type FAI syndrome
Radiography can be a reliable Dx tool
X-radiography findings:�osseous bump on the lateral aspect of femoral head-neck junction. Pistol-grip deformity. Loss of normal head sphericity. Associated features: os acetabule, synovial herniation pit (Pit’s pit). Evidence of DJD in advanced cases
MRI and MR arthrography (most accurate Dx of labral tear) can aid the diagnosis of labral tear and other changes of FAI
Referral to the Orthopedic surgeon is necessary to prevent DJD progression and repair labral abnormalities. Late Dx may lead to irreversible changes of DJD
AP Pelvis: B/L CAM-type FAI syndrome
Pincer-Type FAI with Acetabula Over-Coverage
Key radiographic signs: “Cross-over sign” and abnormal center-edge and Alfa-angle evaluation methods
Dx of FAI
Center-edge angle (above the first image) and Alfa-angle (above the second image)
B/L CAM-type FAI with os acetabule�(above right image)
MR Arthrography
Labral tear and CAM-type FAI syndrome on axial (above left) and coronal T2 W (above right) MR arthrography
Note acetabula labral tear. Referral to an orthopedic surgeon is required. For more information:
Throbbing, dull and achy, sharp and excruciating. All of these words can be used to describe lower back pain.
Unfortunately, lower back pain is a common occurrence in adults. According to the American Chiropractic Association, low back pain is the single leading cause of disability worldwide, with millions of reported cases�every year.
What Treatment Should You Seek If You Experience Pain in Your Lower Back?
The good news is that it often heals on its own. A few days of over-the-counter pain meds, ice,�and taking it easy, and you could be back to normal.
However, those who continue to deal with the pain after a few weeks’ time may choose to look for other solutions. This is also true for people who experience repeated flare-ups, or chronic lower back pain.
One of the best and most popular options is chiropractic care.
Why?�
First of all, chiropractic care doesn’t focus solely on the pain but helps the body heal itself. Chiropractors understand the bones,�muscles, discs, and nerves�in the back, and can figure out the reason for the pain.
From there, they can create a customized treatment plan from compresses to spinal manipulation to exercises that help heal the area and reduces the pain.
Second, It’s A Drug-Free Solution.
Because of its healing, therapeutic approach, chiropractic treatment tends to the source of the pain, instead of simply dulling it. Spine Universe estimates 6 to 12 treatments are typically needed to treat low back pain, but each person’s requirement may vary.
Throughout these�treatments, spinal alignment begins�to balance the other parts of a person’s back and helps correct the issue causing the pain. Also, spinal manipulation helps improve mobility and function in many cases, whereas drugs alone do not.
Finally, Chiropractic Care for Lower Back Pain Also Helps Minimize Relapses
Patients who experience lower back pain never want to deal with it again, but�it can flare up periodically. According to the National Institute of Neurological Disorders and Stroke, roughly 20% of those who suffer from low back pain will eventually deal with it chronically. This can cause frustration, primarily when it affects mobility.
Before you run screaming in horror to the medicine cabinet, one of the best reasons to participate in chiropractic treatment is that it helps reduce the chance of a recurrence. By working on the total body and getting it in the best shape possible, the patient is stronger and more balanced to handle their workload and other strenuous activities. Chiropractors also impart advice on how to minimize the chances of re-aggravating the lower back.
Millions of people suffer from back pain each year, and some never visit a chiropractor. Those who do choose chiropractic treatment are privy to treatment that reduces their pain, increases healing, shortens their downtime and lessens their chances of a recurrence. If over the counter medication and ice packs haven’t worked within a few days, it’s time to make an appointment for a consultation with a licensed chiropractor. You will be happy you did.
With the increase of osteoporosis in older adults, the diagnosis and treatment�of abnormal hip fractures, such as�bisphosphonate-related proximal femoral fractures,�has become more important. According to Dr. Edward J. Fox, MD, obesity is often managed through the long-term�use of bisphosphonate treatment, which can inhibit�osteoclast-mediated bone regeneration. Over the prolonged utilization of bisphosphonate, patients� may develop atypical proximal femoral fractures.
Understanding Atypical Femur Fractures
Atypical femur fractures are characterized as stress fractures which commonly occur in the proximal one-third of the diaphyseal bone, although they might also occur more distally, developing in the lateral cortex and slowly progressing medially. “With irregular fractures, a small ‘beak’ of bone can form on the lateral surface of the femur and that is where the fracture generally begins,” explains Dr. Fox. This contrasts with stress fractures which occur laterally in the medial portion of the bone.
As a result, when a patient with osteoporosis reports feeling hip and knee pain without previous damage or injury, healthcare professionals will ask about bisphosphonate treatment. It is essential for the�doctor to request x-rays of the hip and femur shaft for proper diagnosis.�It is also important to request x-rays of the opposite femur, as atypical bisphosphonate-related proximal femoral fractures frequently occur bilaterally. Dr. Edward J. Fox urges patients to discontinue bisphosphonate use in the case of hip fractures,�followed by the subsequent use of crutches or a walker. Patients will eventually be able to resume regular physical activities.
Approximately more than 250,000 hip fractures occur in the United States, causing significant patient disability. The variety of hip fractures in older adults, including bisphosphonate-related proximal femoral fractures, often need several treatment approaches which depend on different considerations, such as the mechanism of injury, location and degree of the fracture, as well as the patient’s age and overall health and wellness.
Dr. Alex Jimenez D.C., C.C.S.T.
The precise mechanism of injury by which bisphosphonates cause atypical femur fractures is unknown. Research studies have demonstrated that the suppression of osteoclast activity prevents the clearance of bone fragments which build up on the bone surface during regular daily tasks; decreasing the strength of the bones which lead to fracture. “We all know that the threat of those fractures increases with the extended duration of bisphosphonate exposure, particularly after five decades. Bisphosphonates are stored with a half-life of at least eight decades in bone matrix. To reduce over-exposure and risk of atypical fracture, passing medication discontinuance has been speculated to be beneficial,” explained Dr. Fox
Dr. Edward J. Fox, MD, stated that until research studies find the exact mechanism of injury and treatment for bisphosphonate-related proximal femoral fractures, healthcare professionals should continue to determine the best treatment option for each patient, carefully weighing the benefits and risks of individual patients. The scope of our information is limited to chiropractic as well as to spinal injuries and conditions. To discuss the subject matter, please feel free to ask Dr. Jimenez or contact us at�915-850-0900�.
Curated by Dr. Alex Jimenez
Additional Topics: Acute Back Pain
Back pain�is one of the most prevalent causes of disability and missed days at work worldwide. Back pain is the second most common reason for doctor office visits, outnumbered only by upper-respiratory infections. Approximately 80 percent of the population will experience back pain at least once throughout their life. The spine is a complex structure made up of bones, joints, ligaments, and muscles, among other soft tissues. Because of this, injuries and/or aggravated conditions, such as�herniated discs, can eventually lead to symptoms of back pain. Sports injuries or automobile accident injuries are often the most frequent cause of back pain, however, sometimes the simplest of movements can have painful results. Fortunately, alternative treatment options, such as chiropractic care, can help ease back pain through the use of spinal adjustments and manual manipulations, ultimately improving pain relief.
X-radiography pitfalls: some undisplaced Garden 1 & 2 Fxs may be missed d/t pre-existing DJD and osteophytes along the femoral head-neck junction that may overly the Fx line
Fx line is incomplete and too small/subtle especially if the study is read by non-radiologists
Incomplete Fxs if left untreated will not heal and likely to progress to complete Fxs
AP hip spot view: note valgus deformity of the head (above yellow arrow) with a small/subtle line of sclerosis in the sub-capital region representing Garden 1 Fx. MRI may help with Dx of subtle radiographic Fxs. If MRI contraindicated, Tc 99 radionuclide bone scan may help demonstrate high uptake of the radiopharmaceutical in Fx (below image)
Above – Tc99 Radionuclide Bone Scan Reveals Left Subcapital Femoral Neck Fx
Garden 2 complete undisplaced (above green arrows) Fx
AP hip: Garden 3 complete partially displaced Fx (above the first image)
AP pelvis: complete displaced Garden 4 Fx (above the second image)
Clinical pearls: in some cases of Garden 4 Fx, DDx may be difficult to differentiate from OSP vs. pathologic fx d/t to bone Mets of Multiple myeloma (MM)
Management: depends on patients age and activity level
Garden 3 & 4� require total hip arthroplasty in patients <85-y.o.
Garden 1 & 2 may be treated with closed reduction of fx and open capsule and 3-cannulated fixating screws
Pre-existing DJD may require total arthroplasty
Occasionally observation may be performed on patients who are not active and significant risks of surgery and depends on surgical centers
m/c Rx of Garden 1 & 2 undisplaced Fx with 3-screws. Screws proximity depends on the bone quality and Fx type
THA aka hip replacement: cemented THA with bone cement (above the first image) vs. non-cemented (biologic) that is used mostly in younger patients
2-types: metal on metal vs. metal on polyethylene
The femoral angle of the prosthesis should have slight valgus but never >140 degrees
The non-cemented component uses porous metal allowing the bone to integrate sometimes coating in bone cement from osteoconduction
THA has good outcome and prognosis
Occasionally cement failure, fractures, and infections may complicate this procedure
Hip fractures are characterized as any type of break in the upper region of the femur or thigh bone. The variety of broken bones generally depends on the circumstances and the force applied to the bone, where some can be more common than others. Impacted femoral neck fractures are common hip fractures which occur in many older adults in the United States.
Anatomy of Impacted Femoral Neck Fractures
The hip is a ball-and-socket joint which provides the femur the ability to bend and rotate at the pelvis. While any form of broken bones in the thigh bone or femur is considered a hip fracture, damage or injury to the socket, or acetabulum, itself is not considered a hip fracture. Below we will discuss hip fractures, particularly impacted femoral neck fractures, among others.
Causes, Symptoms and Diagnosis
Hip fractures frequently�occur due to a slip-and-fall accident or due�to a direct blow to the hip. Various health issues, including osteoporosis and stress injuries, as well as cancer, can sometimes weaken the bones and make the pelvis more vulnerable to fractures.�The neck of the femur is located under the ball of the hip joint. Impacted femoral neck fractures occur when a force presses against both ends of the femur at the femoral neck, pushing the broken ends of the bone together.
Patients with hip fractures experience symptoms of pain on the upper thigh or in the groin. They may also experience considerable discomfort with any attempt to flex or rotate the hip. In comparison to impacted femoral neck fractures, if the bone is completely broken, the leg may appear to be shorter than the non-injured leg. Also, the patient will hold the injured leg in a still position with the foot and knee turned outward in external rotation.
Diagnosis�for hip fractures commonly involves the use of x-rays of the hip, pelvis and/or femur. In several instances, if the patient experiences a slip-and-fall accident or a direct blow to the hip resulting in impacted femoral neck fractures, they may not be seen on a regular x-ray. Magnetic resonance imaging, or MRI, may be recommended to view some cases of hip fractures. The MRI scan will typically demonstrate any hidden hip fractures. Computed tomography, or CT, scans may also be utilized instead.
Impacted femoral neck fractures are hip injuries which occur just below the femoral head, or the ball-and-socket hip joint, where the broken ends of the bone are jammed together by the force of the injury. This area of the thigh bone, or femur, is known as the femoral neck. Treatment for impacted femoral neck fractures may include rest and physical rehabilitation. Diagnosis for impacted femoral neck fractures is important for treatment.
Dr. Alex Jimenez D.C., C.C.S.T.
Treatment of Impacted Femoral Neck Fractures
Once a healthcare professional has diagnosed the patient’s hip fracture, their overall health and wellness will also be evaluated.�Treatment for femoral neck stress fractures depends on the patient’s age and on the extent of the broken bone. Treatment for femoral neck stress fractures�include bed rest for several days followed by a physical rehabilitation program.
Many femoral neck stress fractures are treated with surgery. It’s essential for the patient to talk to their doctor to discuss the best treatment option.�The scope of our information is limited to chiropractic as well as to spinal injuries and conditions. To discuss the subject matter, please feel free to ask Dr. Jimenez or contact us at�915-850-0900�.
Curated by Dr. Alex Jimenez
Additional Topics: Chiropractic for Athletes with Back Pain
Back pain�is one of the most prevalent causes of disability and missed days at work worldwide. Back pain is the second most common reason for doctor office visits, outnumbered only by upper-respiratory infections. Approximately 80 percent of the population will experience back pain at least once throughout their life. The spine is a complex structure made up of bones, joints, ligaments, and muscles, among other soft tissues. Because of this, injuries and/or aggravated conditions, such as�herniated discs, can eventually lead to symptoms of back pain. Sports injuries or automobile accident injuries are often the most frequent cause of back pain, however, sometimes the simplest of movements can have painful results. Fortunately, alternative treatment options, such as chiropractic care, can help ease back pain through the use of spinal adjustments and manual manipulations, ultimately improving pain relief.
Grateful for the treatment they have received for their injuries and conditions, many patients highly recommend Dr. Alex Jimenez, doctor of chiropractic, for a variety of health issues. Chiropractic care is an alternative treatment option which focuses on the diagnosis, treatment, and prevention of injuries and conditions associated with the musculoskeletal and nervous system. Dr. Alex Jimenez’s patients describe how much chiropractic care has improved their overall health and wellness, changing their quality of life for the best. Dr. Alex Jimenez is the recommended non-surgical treatment choice for a variety of health issues, including neck and back pain, among others.
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