title: The prevalence of the complications and their associated factors in humeral lengthening for achondroplasia: retrospective study of 54 cases.
abstract: The aim of this study is to evaluate the complications of humeral lengthening and their associated factors. Fifty-four achondroplastic patients were treated by bilateral humeral lengthening. Our original shoulder sling was sufficient to prevent shoulder dislocation. Pre-existing radial head dislocation was observed in 18 patients. Lengthening was accomplished in all cases without a decrease in the elbow function. Seven humeri fractured after the fixator removal. The risk factors for postoperative fracture were a waiting period of less than 5 days, a healing index less than 25, and the concave shape of the callus. There was no radial nerve palsy.
authors.affiliation: aDepartment of Paediatric Orthopaedics, Shiga Medical Center for Children, Moriyama, Shiga bSky Orthopaedic Clinic, Osaka, Ibaragi, Japan.
authors.forename: Natsuko
authors.initials: N
authors.lastname: Nakano-Matsuoka
authors.forename: Kenichi
authors.initials: K
authors.lastname: Fukiage
authors.forename: Yuki
authors.initials: Y
authors.lastname: Harada
authors.forename: Naoya
authors.initials: N
authors.lastname: Kashiwagi
authors.forename: Tohru
authors.initials: T
authors.lastname: Futami
mesh_terms: D000130:Achondroplasia / Q000601:surgery*; D000293:Adolescent; D001852:Bone Lengthening / Q000009:adverse effects* / Q000379:methods; D002648:Child; D016267:External Fixators; D005260:Female; D006801:Humans; D006810:Humeral Fractures / Q000209:etiology / Q000517:prevention & control; D006811:Humerus / Q000601:surgery*; D008297:Male; D011183:Postoperative Complications / Q000209:etiology* / Q000517:prevention & control; D012189:Retrospective Studies; D012307:Risk Factors; D012783:Shoulder Dislocation / Q000209:etiology / Q000517:prevention & control; D016896:Treatment Outcome