Review Question - QID 218664

An 11-year-old gymnast has been having significant pain in her left wrist while practicing her floor routine over the last month. Radiographs of her wrist are shown in Figures A and B. She has swelling and predominantly radial-sided wrist tenderness on palpation with slight loss of active wrist extension on active range of motion. She fails conservative management, is lost to follow-up, and then presents two years later with the findings in Figure C, which represents an axial cut from the CT scan of the patient's wrist at the level of the distal radial physis. Without further treatment, which of the following is the patient at risk for developing?