Review Question - QID 7202

A 14-year-old boy underwent in situ screw fixation for a left slipped capital femoral epiphysis 8 months ago. He noted 3 months of intermittent right hip pain but is presently asymptomatic. The last episode of pain was 2 days prior to this office visit. He reports that he has pain approximately once a week over the past 3 months. Examination of the right hip is normal, and includes pain-free internal rotation. Radiographs and an MRI scan are shown in Figures 14a through 14c. Treatment should consist of which of the following?