Review Question - QID 211337

Figure A is the radiograph of a 31-year-old previous collegiate soccer player who presents for evaluation of left hip pain. The patient reports insidious onset of left groin pain that now prevents him from running. Upon questioning, he denies any specific injuries or traumatic events. On exam, he walks with a normal gait and has no tenderness to palpation along the pelvic rim, pubis or trochanters. On dynamic testing, he has pain with the combination of hip flexion, adduction, and internal rotation. Which of the following is the most likely diagnosis?