title: Long-term results of intertrochanteric varus osteotomy for arthrosis of the dysplastic hip (over 10 years' follow-up).
abstract: We performed a retrospective clinical and radiographic review of the long-term results of 64 hips in 53 patients who underwent intertrochanteric varus osteotomy for arthrosis of the hip at the pre- or early stage with acetabular dysplasia. Their average age at operation was 26 years. The average duration of follow-up was 18 years and 10 months. The mean Harris hip score was 77 +/- 9 points pre-operatively, and improved significantly to 84 +/- 13 points at the final follow-up. The acetabular coverage influenced the final outcome, and the postoperative prognosis was predictable from the acetabular head index (AHI) on a pre-operatively done hip maximum abduction radiograph (abd XP). We conclude that varus osteotomy for a dysplastic hip should be considered when the acetabular coverage is sufficient, and that a good prognosis can be expected when AHI on abd XP is greater than 60%.
authors.affiliation: Department of Orthopaedic Surgery, Nagoya University School of Medicine, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Iwase
authors.forename: Y
authors.initials: Y
authors.lastname: Hasegawa
authors.forename: Y
authors.initials: Y
authors.lastname: Kataoka
authors.forename: T
authors.initials: T
authors.lastname: Matsuda
authors.forename: H
authors.initials: H
authors.lastname: Iwata
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D006618:Hip Dislocation, Congenital / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D010027:Osteotomy; D011379:Prognosis; D011859:Radiography; D012189:Retrospective Studies; D016896:Treatment Outcome