Femoroacetabular Impingement: A Patient’s Guide

Overview

Femoroacetabular impingement (FAI) is a condition that affects the hip joint, causing pain and limited range of motion. It occurs when the bones of the hip joint rub together abnormally, leading to damage of the cartilage and soft tissues in the joint. FAI is a common problem, especially among active individuals and athletes.

Types

There are two main types of FAI: cam impingement and pincer impingement. Cam impingement occurs when the round femoral head is not perfectly round and cannot rotate smoothly within the socket. Pincer impingement is caused by an overgrowth of bone around the acetabulum (socket), leading to pinching of the labrum.

Causes

The exact cause of FAI is not always clear, but it is believed to be caused by a combination of genetic factors, hip joint anatomy, and repetitive hip movements. Risk factors for developing FAI include participating in sports that involve repetitive hip motion, such as football, hockey, or dancing.

Symptoms

The most common symptom of FAI is hip pain, particularly during activities that involve flexing the hip, such as sitting for long periods, walking, or running. Other symptoms may include stiffness, limited range of motion, and a feeling of catching or locking in the hip joint.

Diagnosis

Diagnosing FAI typically involves a combination of physical examination, imaging tests (such as X-rays, MRI, or CT scans), and possibly an injection of local anesthetic into the hip joint to confirm the source of pain. Your healthcare provider may also order blood tests to rule out other conditions that could be causing your symptoms.

Treatment Options

Treatment for FAI usually begins with conservative measures, such as rest, physical therapy, and nonsteroidal anti-inflammatory drugs (NSAIDs) to reduce pain and inflammation. In some cases, corticosteroid injections may be recommended to provide temporary relief. If conservative treatment does not improve symptoms, surgery may be necessary to correct the underlying structural issues in the hip joint.

Living With Femoroacetabular Impingement

Managing FAI involves making lifestyle changes to protect the hip joint and prevent further damage. This may include avoiding activities that worsen symptoms, maintaining a healthy weight, and practicing proper posture and body mechanics. Physical therapy exercises can help improve hip strength and flexibility, while assistive devices like canes or walkers may be used to reduce stress on the joint.

When to Seek Help

It is important to seek medical attention if you experience severe hip pain, sudden swelling or deformity of the hip joint, or difficulty bearing weight on the affected leg. These symptoms may indicate a more serious injury or condition that requires immediate evaluation and treatment by a healthcare provider.