Comparison of Surgery With Prehabilitation, Direct Surgery and Rehabilitation for Patients With Femoroacetabular Impingement

Inclusion Criteria: 1. Presence of hip pain with imaging evidence of Cam- or Pincer-type femoroacetabular impingement morphology; 2. Age ≥ 16 years; 3. Able to provide written informed consent; 4. Physician judgment that the patient is likely to benefit from hip arthroscopic surgery or a rehabilitation program. Exclusion Criteria: 1. Concomitant hip osteoarthritis (Tönnis grade \> 1, or joint space \< 2 mm on the anteroposterior pelvic radiograph); 2. History of prior hip pathology, including Legg-Calvé-Perthes disease, slipped capital femoral epiphysis, or avascular necrosis of the femoral head; 3. History of prior hip trauma, including acetabular fracture, hip dislocation, or femoral neck fracture; 4. Previous hip surgery (open or arthroscopic); 5. Completion of a rehabilitation program specifically for FAIS within the past 12 months; 6. Hip dysplasia (lateral center-edge angle \< 20°).