Hip Capsular Contracture

The hip joint capsule is a dense, strong sleeve of fibrous tissue that surrounds the ball-and-socket joint. It is made up of three distinct ligaments (the iliofemoral, pubofemoral, and ischiofemoral ligaments), which are the primary static stabilizers of the hip. The capsule maintains hip stability, contributes to the hip "fluid seal," and must be preserved or repaired during hip arthroscopy.

Capsular contracture occurs when the capsule becomes pathologically thickened and shortened, restricting normal hip range of motion. Causes include:

• Primary (idiopathic): Capsular fibrosis without prior surgery; may co-exist with FAI or occur after prolonged immobilization
• Post-arthroscopic: If the hip capsule is not closed (repaired) after hip arthroscopy, an abnormal healing response can lead to scar tissue formation and stiffness; paradoxically, an unclosed capsule can also lead to instability
• Inflammatory conditions: Reactive synovitis or rheumatoid arthritis can produce capsular thickening
• Post-infection or post-fracture: Fibrosis from a prior septic hip or acetabular fracture

The capsular closure debate: There is strong evidence that routine capsular repair (closure of capsulotomy incisions) at the time of hip arthroscopy reduces the risk of both post-operative instability and fibrotic contracture. Dr. Christoforetti routinely performs capsular closure as a standard component of hip arthroscopy.

Treatment options

Physical therapy is the first-line treatment for hip capsular contracture and succeeds in the majority of cases. Goals include: - Progressive hip internal rotation and flexion stretching within a pain-free range - Manual therapy techniques to restore capsular compliance - Hip flexor flexibility and hip strengthening to optimize mechanics - Aquatic therapy for gentle mobilization under reduced joint load Intra-articular corticosteroid injection reduces capsular inflammation and joint synovitis, facilitating PT engagement. Useful in both primary and post-arthroscopic contracture. Arthroscopic capsular release: Indicated for refractory capsular contracture that has failed 3–6 months of supervised PT and injection. Under arthroscopy, Dr. Christoforetti systematically releases the thickened and scarred capsular tissue, restoring range of motion. Key principles: - Selective release: only contracted portions are released; intact stabilizing ligaments are preserved - Concurrent intra-articular pathology (loose bodies, remaining labral or chondral issues) is addressed simultaneously - Followed immediately by intensive physical therapy to maintain the restored motion Preventing recurrence after release: Post-operative PT begins within days; aggressive, sustained range-of-motion work is critical to prevent re-scarring.

Frequently Asked Questions