Treatment for Femoroacetabular Impingement (FAI)
Femoroacetabular Impingement (FAI) Treatment in Los Angeles
Femoroacetabular impingement (FAI), often referred to as hip impingement, is a condition that occurs when the bones of the hip joint do not fit together properly. This abnormal contact causes friction between the ball of the femur and the hip socket, which can damage cartilage and the labrum over time and lead to progressive hip pain and stiffness.
In Los Angeles, patients with femoroacetabular impingement are evaluated and treated by Dr. Farzin Kabaei, a board-certified orthopedic surgeon specializing in advanced hip reconstruction and joint preservation. Over the course of his career, Dr. Kabaei has performed thousands of hip and knee procedures, including more than 1,000 robotic-assisted joint replacement surgeries, giving him deep experience diagnosing complex hip conditions that can ultimately lead to arthritis or joint degeneration.
Dr. Kabaei completed orthopedic surgery training at Montefiore / Albert Einstein Medical Center and advanced fellowship training in joint reconstruction at Cedars-Sinai Medical Center, one of the leading orthopedic programs in the United States. His clinical focus includes identifying mechanical hip problems early and implementing treatment strategies designed to preserve the joint whenever possible.
For many patients, diagnosing femoroacetabular impingement early can help prevent long-term damage to the hip joint and delay or avoid the need for joint replacement surgery later in life.
What Is Femoroacetabular Impingement (FAI)?
Femoroacetabular impingement is a mechanical condition in which the ball-and-socket components of the hip joint make abnormal contact during movement. This repeated friction can damage the cartilage and soft tissues of the hip joint.
The hip joint consists of two main structures:
• The femoral head, the ball at the top of the thigh bone
• The acetabulum, the socket in the pelvis
Normally these structures move smoothly within the joint. In patients with FAI, subtle abnormalities in bone shape cause the femoral head and acetabulum to collide during certain movements, leading to progressive wear inside the joint.
Over time, this repeated contact may damage:
• Articular cartilage
• The acetabular labrum
• The smooth motion of the hip joint
If left untreated, femoroacetabular impingement can eventually contribute to early hip osteoarthritis.
Types of Femoroacetabular Impingement
Orthopedic specialists generally classify FAI into three primary types depending on the underlying bone abnormality.
Cam Impingement
Cam impingement occurs when extra bone develops on the femoral head, creating an irregular shape that prevents smooth rotation inside the socket.
This abnormal bone can grind against the cartilage of the hip socket during movement.
Pincer Impingement
Pincer impingement occurs when the hip socket extends too far over the femoral head, causing the labrum to become pinched between the bones during movement.
This type is more common in some female patients.
Combined Impingement
Many patients develop a combined form of FAI, meaning both cam and pincer deformities are present in the same hip joint.
Combined impingement is the most common presentation seen in orthopedic practices.
Symptoms of Femoroacetabular Impingement
The symptoms of FAI can vary depending on the severity of the structural abnormality and the amount of cartilage damage that has already occurred.
Common symptoms include:
• Persistent hip or groin pain
• Stiffness in the hip joint
• Pain during bending or squatting movements
• Clicking or catching sensations in the hip
• Reduced range of motion
• Pain during prolonged sitting or athletic activity
Many patients first notice symptoms during activities that involve deep hip flexion, such as tying shoes, squatting, or sitting for long periods.
Athletes and active individuals often experience symptoms earlier because repetitive hip movement places greater stress on the joint.
Causes and Risk Factors
The exact cause of femoroacetabular impingement is not always clear. However, several factors may contribute to its development.
These include:
• Subtle hip joint abnormalities present since birth
• Abnormal bone development during adolescence
• High-impact athletics involving repetitive hip motion
• Genetic predisposition
• Structural alignment differences in the hip joint
FAI frequently affects active adults between 20 and 45 years of age and is a common cause of hip pain in younger patients.
Because symptoms can develop gradually, many patients do not initially recognize the underlying cause of their discomfort.
Diagnosing Femoroacetabular Impingement
Diagnosis begins with a comprehensive orthopedic evaluation.
During consultation, Dr. Kabaei typically evaluates:
• Hip range of motion
• Pain patterns during movement
• Joint stability and alignment
• Mechanical symptoms such as clicking or locking
Imaging studies are essential for confirming the diagnosis. These may include:
X-rays to evaluate bone structure
MRI scans to detect labral tears and cartilage damage
CT imaging in complex cases
These imaging tools allow surgeons to precisely identify the structural abnormalities responsible for impingement.
Non-Surgical Treatment for FAI
In many cases, early-stage femoroacetabular impingement can be managed without surgery.
Conservative treatment may include:
• Physical therapy to improve hip strength and mobility
• Activity modification to reduce joint stress
• Anti-inflammatory medications
• Corticosteroid injections to reduce inflammation
Physical therapy programs are often designed to strengthen the muscles surrounding the hip joint and improve movement mechanics.
These treatments can significantly reduce symptoms in many patients.
However, if structural bone abnormalities continue to cause friction inside the joint, symptoms may eventually return.
Surgical Treatment for Femoroacetabular Impingement
When conservative treatments fail to provide adequate relief, surgery may be recommended.
Modern treatment for FAI often involves minimally invasive hip arthroscopy, which allows surgeons to repair damage and correct bone abnormalities through small incisions.
During arthroscopic surgery, the surgeon may:
• Reshape the femoral head to eliminate cam deformities
• Trim excess bone from the hip socket
• Repair or reconstruct the torn labrum
• Remove damaged cartilage
The goal of surgery is to restore smooth joint mechanics and prevent further degeneration of the hip joint.
In cases where severe cartilage damage has already occurred, more advanced procedures such as hip replacement surgery may eventually be necessary.
Why Early Treatment Matters
Femoroacetabular impingement is increasingly recognized as a major contributor to early hip arthritis.
When abnormal bone contact continues over many years, the cartilage of the hip joint can deteriorate and lead to progressive joint damage.
Early diagnosis and treatment can help:
• Preserve natural joint function
• Reduce long-term cartilage damage
• Improve hip mobility
• Prevent premature arthritis
For this reason, patients with persistent hip pain should seek evaluation from an orthopedic specialist experienced in hip joint conditions.
Femoroacetabular Impingement Treatment in Los Angeles
Hip pain can significantly affect quality of life, athletic performance, and everyday activities. Identifying the underlying cause of that pain is essential to developing the right treatment strategy.
Dr. Farzin Kabaei provides comprehensive evaluation and treatment for patients with femoroacetabular impingement in Los Angeles. His experience in both joint preservation techniques and advanced hip reconstruction allows him to recommend treatment strategies tailored to each patient’s condition, lifestyle, and long-term joint health goals.
Whether treatment involves physical therapy, minimally invasive arthroscopy, or advanced hip reconstruction procedures, the goal is always the same: restoring comfortable movement and protecting the long-term health of the hip joint.
Frequently Asked Questions About Femoroacetabular Impingement
What causes femoroacetabular impingement?
FAI is typically caused by abnormal bone shapes in the hip joint that cause the femoral head and hip socket to rub against each other during movement.
Is femoroacetabular impingement common?
Yes. FAI is considered a common cause of hip pain, particularly in younger adults and athletes.
Can femoroacetabular impingement lead to arthritis?
Yes. Repeated friction within the joint can damage cartilage and eventually lead to hip osteoarthritis if untreated.
Does FAI always require surgery?
No. Many patients improve with conservative treatment such as physical therapy, medication, and activity modification.
How long is recovery after FAI surgery?
Recovery time varies depending on the procedure performed but often involves several weeks of rehabilitation to restore strength and mobility.