Recurrent Perthes' disease.
D002675:Child, Preschool; D004838:Epiphyses / Q000000981:diagnostic imaging; D004839:Epiphyses, Slipped / Q000150:complications / Q000000981:diagnostic imaging; D005270:Femur Head / Q000000981:diagnostic imaging*; D006615:Hip / Q000000981:diagnostic imaging*; D006621:Hip Joint; D006801:Humans; D008297:Male; D009336:Necrosis; D010007:Osteochondritis / Q000000981:diagnostic imaging* / Q000628:therapy; D011859:Radiography; D012008:Recurrence; D012146:Rest; D014143:Traction