title: Radiographic changes in the hip joint in children suffering from Perthes disease.
abstract: The purpose was to compare radiographic parameters with a sex-matched and age-matched control group at the onset of disease and at skeletal maturity. The study comprised 143 patients with Legg-Calvé-Perthes disease, treated using a Thomas splint. Wiberg's centre-edge angle and the acetabular index angle were applied. The age at diagnosis was 6.6 years with no difference between boys and girls. At the time of diagnosis, the centre-edge angle was decreased from 18° in the control group to 10° in the affected hip. The age at follow-up was 16 (SD 2) years for the boys and 15 (SD 3) years for the girls. At the time of skeletal maturity, the centre-edge angle was decreased and the acetabular index angle increased in the affected hip and the nonaffected hip in Stulberg class III/IV/V hips compared with the control group. Initially radiographic changes only occur on the affected hip. At skeletal maturity both hips show radiographic changes.
authors.affiliation: Department of Orthopaedic Surgery and Traumatology, Odense University Hospital, Odense, Denmark. lonniefroberg@yahoo.dk
authors.forename: Lonnie
authors.initials: L
authors.lastname: Froberg
authors.forename: Finn
authors.initials: F
authors.lastname: Christensen
authors.forename: Niels Wisbech
authors.initials: NW
authors.lastname: Pedersen
authors.forename: Søren
authors.initials: S
authors.lastname: Overgaard
mesh_terms: D000077:Acetabulum / Q000254:growth & development / Q000473:pathology / Q000601:surgery; D001846:Bone Development / Q000502:physiology; D002648:Child; D005260:Female; D006621:Hip Joint / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D006801:Humans; D007873:Legg-Calve-Perthes Disease / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D008297:Male; D011859:Radiography; D013165:Splints