title: Commentary on an article by Harry K.W. Kim, MD, MSc, FRCSC, et al.: "How much varus is optimal with proximal femoral osteotomy to preserve the femoral head in Legg-Calvé-Perthes disease?".
authors.affiliation: Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, Maryland, USA.
authors.forename: Paul D
authors.initials: PD
authors.lastname: Sponseller
mesh_terms: D002648:Child; D004838:Epiphyses / Q000601:surgery; D005269:Femur / Q000601:surgery*; D005270:Femur Head / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D007873:Legg-Calve-Perthes Disease / Q000145:classification / Q000175:diagnosis / Q000601:surgery*; D010027:Osteotomy / Q000379:methods*; D011183:Postoperative Complications / Q000209:etiology; D016032:Randomized Controlled Trials as Topic