A twenty one-year old man was hit by a car and his left hip joint was dislocated posteriorly.
After manual reduction, a small bone fragment was found between the joint space. Arthroscopic removal of the fragment was carried out successfully. The osteochondral fragment was 4cm long, 1cm wide, and 0.5cm thick, and derived from the posterior rim of the acetabulum. Full weight-bearing was permitted one week after the operation, and his hip function was recovered completely at a follow-up of four months post-operatively. Arthroscopic surgery proved to be less invasive and more useful than open surgery for the extraction of free bodies in the hip joint.
