title: Prognostic radiographic factors in developmental dysplasia of the hip following Salter osteotomy.
abstract: Radiographic parameters for evaluating hip development are altered by Salter osteotomy, and their prognostic value require further validation. A total of 63 patients who underwent open reduction and Salter osteotomy for unilateral hip dysplasia were evaluated with Severin classification 10.8 years later. The initial first-year postoperative acetabular index, c/b ratio, head-teardrop distance, and head coverage were compared with the final outcome of Severin classification. Greater c/b ratio was significantly associated with later Severin class III hip. Using receiver operating characteristics curve, a c/b ratio greater than 0.72 at 6 months and 1 year postoperatively can predict the possibility of a class III hip in 30 and 60% of patients, respectively.
authors.affiliation: aDepartment of Pediatric Orthopedics, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan bDepartment of Orthopedics, Chung Shan Hospital cCollege of Medicine, Taipei Medical University dDepartment of Orthopedics, National Taiwan University Hospital, Taipei, Taiwan.
authors.forename: Chia-Hsieh
authors.initials: CH
authors.lastname: Chang
authors.forename: Wen-E
authors.initials: WE
authors.lastname: Yang
authors.forename: Hsuan-Kai
authors.initials: HK
authors.lastname: Kao
authors.forename: Wei-Chun
authors.initials: WC
authors.lastname: Lee
authors.forename: Chun-Hsiung
authors.initials: CH
authors.lastname: Shih
authors.forename: Ken N
authors.initials: KN
authors.lastname: Kuo
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging; D002675:Child, Preschool; D005260:Female; D005270:Femur Head / Q000000981:diagnostic imaging; D006618:Hip Dislocation, Congenital / Q000000981:diagnostic imaging / Q000601:surgery*; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D007223:Infant; D008297:Male; D010027:Osteotomy / Q000379:methods*; D011379:Prognosis; D012372:ROC Curve; D011859:Radiography; D012189:Retrospective Studies