title: A comparative study of Legg-Perthes disease.
mesh_terms: D000553:Ambulatory Care; D002370:Casts, Surgical; D002648:Child; D002675:Child, Preschool; D003365:Costs and Cost Analysis; D005260:Female; D005271:Femur Head Necrosis / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000628:therapy*; D006760:Hospitalization; D006801:Humans; D007223:Infant; D008297:Male; D008722:Methods; D009068:Movement; D009518:New York; D010007:Osteochondritis / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000628:therapy*; D011379:Prognosis; D011859:Radiography; D012189:Retrospective Studies; D012737:Sex Factors