title: The Chiari pelvic osteotomy for patients with dysplastic hips and poor joint congruency: long-term follow-up.
abstract: We report the mid- to long-term (mean 20.3 years, 10 to 32.5) results of the Chiari pelvic osteotomy in patients with pre- to advanced stage osteoarthritis in dysplastic hips. We followed 163 Japanese patients (173 hips) with a mean age at surgery of 20 years (9 to 54). Overall, 124 hips (72%) had satisfactory results, with Harris hip scores ≥ 80. Satisfactory results were seen in 105 of 134 hips with pre- or early osteoarthritis (78%) and 19 of 39 hips with advanced osteoarthritis (49%). A total of 15 hips (9%) underwent a total hip replacement (THR) with a mean interval between osteotomy and THR of 16.4 years. With conversion to THR as the endpoint, the 30-year survival rate was 85.9% (95% confidence interval 82.3 to 89.5). It was 91.8% for patients with pre- or early osteoarthritis and 43.6% for those with advanced osteoarthritis (p < 0.001). We now perform the Chiari osteotomy for patients with dysplastic hips showing poor joint congruency and who prefer a joint-conserving procedure to THR.
authors.affiliation: Department of Orthopaedic Surgery, Asahikawa Medical University, Midorigaoka Higashi 2-1-1-1, Asahikawa 078-8510, Japan. itohiro@asahikawa-med.ac.jp
authors.forename: H
authors.initials: H
authors.lastname: Ito
authors.forename: H
authors.initials: H
authors.lastname: Tanino
authors.forename: Y
authors.initials: Y
authors.lastname: Yamanaka
authors.forename: T
authors.initials: T
authors.lastname: Nakamura
authors.forename: A
authors.initials: A
authors.lastname: Minami
authors.forename: T
authors.initials: T
authors.lastname: Matsuno
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D019644:Arthroplasty, Replacement, Hip; D002648:Child; D018450:Disease Progression; D005500:Follow-Up Studies; D006618:Hip Dislocation, Congenital / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000209:etiology / Q000601:surgery; D010027:Osteotomy / Q000379:methods*; D010384:Pelvic Bones / Q000601:surgery; D011859:Radiography; D016019:Survival Analysis; D016896:Treatment Outcome; D055815:Young Adult