Review Question - QID 211174

Figure A is the radiograph of an otherwise healthy 33-year-old female soccer player with a history of hip dysplasia. She reports 6 weeks of left groin pain that has not improved with physical therapy. She endorses snapping and clicking in the left hip with certain movements. On exam, she has pain if the hip is brought from a flexed, externally rotated and abducted position to a position of extension, internal rotation, and adduction. An intraarticular steroid injection temporarily improved her symptoms. What is the most likely diagnosis?