title: The natural history of Perthes' disease.
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging; D000367:Age Factors; D001835:Body Weight; D002114:Calcinosis / Q000150:complications; D002648:Child; D002675:Child, Preschool; D005260:Female; D005270:Femur Head / Q000000981:diagnostic imaging; D006617:Hip Dislocation / Q000150:complications; D006801:Humans; D008297:Male; D010007:Osteochondritis / Q000175:diagnosis / Q000000981:diagnostic imaging; D011379:Prognosis; D011859:Radiography; D012737:Sex Factors; D013165:Splints