MSFinals-4638
A 9-year-old girl presents to a general practice appointment with her mother complaining of right-sided hip pain and occasional limp for the past month. The patient is feeling well, has no fever, and is in the 90th percentile for weight. She was born via spontaneous vertex vaginal delivery at term and had a normal newborn physical examination. On examination, there is limited range of motion in her right hip. A frog-leg hip x-ray is ordered, which reveals sclerosis of the right upper femoral epiphysis and moderate resorption of the femoral head. What is the most accurate diagnosis for this patient?