title: Bone age determination in children with Legg-Calvé-Perthes disease: a comparison of two methods.
abstract: In 100 children (17 girls, 83 boys) with Legg-Calvé-Perthes disease, the average chronological age, pelvis bone age, and hand-wrist bone age were significantly different for the girls (8.2, 6.9, and 7.0 years, respectively; p < 0.05) and the boys (8.2, 7.4, and 5.9 years, respectively; p < 0.05). For the girls, the chronological age was greater than the pelvis bone age and the hand-wrist bone age (p < 0.05); there was no difference between the pelvis and hand-wrist bone age. For the boys, the chronological age was greater than the pelvis bone age and the hand-wrist bone age (p < 0.05); the pelvis bone age was greater than the hand-wrist bone age and less than the chronological age (p < 0.05). The acromelic growth in Legg-Calvé-Perthes disease may explain why the more proximal pelvis bone age in boys was less delayed than that of the more distal hand-wrist.
authors.affiliation: Section of Orthopaedic Surgery, School of Medicine, University of Michigan, Ann Arbor.
authors.forename: R T
authors.initials: RT
authors.lastname: Loder
authors.forename: F A
authors.initials: FA
authors.lastname: Farley
authors.forename: J A
authors.initials: JA
authors.lastname: Herring
authors.forename: M A
authors.initials: MA
authors.lastname: Schork
authors.forename: Y
authors.initials: Y
authors.lastname: Shyr
mesh_terms: D000365:Age Determination by Skeleton / Q000379:methods*; D001842:Bone and Bones / Q000503:physiopathology*; D002648:Child; D005260:Female; D006225:Hand; D006801:Humans; D007873:Legg-Calve-Perthes Disease / Q000503:physiopathology*; D008297:Male; D010384:Pelvic Bones / Q000503:physiopathology; D014953:Wrist