Randomized controlled trial of hip arthroscopy for femoroacetabular impingement

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Femoroacetabular impingement (FAI) occurs as a consequence of abnormal contact between the pelvis and femoral head–neck junction, resulting in damage to the hip joint. Because FAI is associated with symptoms and may play a role in predisposing to osteoarthritis, new surgical techniques have been developed to correct this anatomic abnormality. However, the disease modifying benefits of surgery are unknown. We therefore propose a randomized controlled trial to evaluate its efficacy and to determine the mechanisms of effect.