Long-term follow-up of a patient cohort with Legg–Calvé–Perthes diseaseFroberg, Lonniea,c; Christensen, Finna; Pedersen, Niels W.b,c; Overgaard, Sorenb,cJournal of Pediatric Orthopaedics B: September 2011 - Volume 20 - Issue 5 - p 273–277 doi: 10.1097/BPB.0b013e3283474268 HIP AND FEMUR Buy Abstract Author InformationAuthors Article MetricsMetrics The purpose of this study was to evaluate prognostic risk factors related to a poor radiological outcome. The study consisted of 74 patients with Legg–Calvé–Perthes disease treated using a Thomas splint. The modified Herring lateral pillar classification and the reviewed Stulberg classification system were applied. A significant correlation between the Herring group and Stulberg was found (P=0.03). There was a significant correlation between age at onset of the disease and Stulberg outcome (P=0.05). The Herring classification correlated to the Stulberg outcome. An age of 7 years or more at onset was considered as a risk factor for a poor Stulberg outcome. aDepartment of Orthopaedic Surgery Fredericia and Kolding Hospitals bDepartment of Orthopaedic Surgery and Traumatology, Odense University Hospital cClinical Institute, University of Southern Denmark, Denmark Correspondence to Lonnie Froberg, MD, Department of Orthopaedic Surgery and Traumatology, Odense University Hospital, Sdr. Boulevard 29, 5000 Odense C, Denmark Tel: +45 20280321; fax: +45 76363459; e-mail: email@example.com © 2011 Lippincott Williams & Wilkins, Inc.