title: The distal radius and ulna classification in assessing skeletal maturity: a simplified scheme and reliability analysis.
abstract: The aim of this study is to simplify the distal radius and ulna classification for practical use and to test its reliability. This was a prospective single-center study of patients with juvenile and adolescent idiopathic scoliosis. Left-hand radiographs were retrieved for measurements by three examiners. Reliability analysis was carried out by intraclass correlation. 34 females and 16 males were recruited, mean age 12.7 years (±SD 1.7). The grades varied from R4-R11 to U1-U9. There was strong to near-perfect intraclass correlation. This study concludes that the simplified distal radius and ulna classification is a reliable tool for assessment of skeletal maturity.
authors.affiliation: Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, Special Administrative Region, China.
authors.forename: Jason Pui Yin
authors.initials: JP
authors.lastname: Cheung
authors.forename: Dino
authors.initials: D
authors.lastname: Samartzis
authors.forename: Prudence Wing Hang
authors.initials: PW
authors.lastname: Cheung
authors.forename: Ka Hei
authors.initials: KH
authors.lastname: Leung
authors.forename: Kenneth Man Chee
authors.initials: KM
authors.lastname: Cheung
authors.forename: Keith Dip-Kei
authors.initials: KD
authors.lastname: Luk
mesh_terms: D000293:Adolescent; D001846:Bone Development; D001915:Braces; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D011446:Prospective Studies; D011884:Radius / Q000254:growth & development*; D015203:Reproducibility of Results; D012600:Scoliosis / Q000145:classification* / Q000628:therapy; D014457:Ulna / Q000254:growth & development*