Shiho Kanezaki1, Shigeru Nakamura2, Masaki Nakamura2, Isao Yokota3, Takashi Matsushita2. 1. Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan. starlovedear122@yahoo.co.jp. 2. Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan. 3. Department of Biostatistics, Kyoto Prefectural University of Medicine, Tokyo, Japan.
Abstract
PURPOSE: Rotational acetabular osteotomy (RAO) is one of the surgical procedures for painful dysplastic hips. Although several risk factors for poor outcome of RAO have been reported, the presence of a curtain osteophyte in the acetabulum has not been evaluated as a possible risk factor. This study aimed to analyze the risk factors affecting the outcome of RAO and to clarify whether curtain osteophytes are one of the risk factors. METHODS: We retrospectively analyzed 87 hips in 78 patients with a mean age of 36 (range, 13-54) years. The mean follow-up period was 8.3 (range, 2.1-19.5) years. The radiographic severity of osteoarthritis was classified into four stages: pre-arthrosis, initial stage, advanced stage, and terminal stage. The Japanese Orthopaedic Association (JOA) hip score was used for clinical evaluation. Poor outcome was defined as a hip with a JOA score < 80 points or terminal-stage osteoarthritis at final follow-up. Several factors were evaluated by logistic regression analysis. RESULTS: At final follow-up, ten hips had a JOA score < 80 and nine hips had progressed to terminal-stage osteoarthritis. Since five hips had a JOA score < 80 as well as terminal-stage osteoarthritis, a total of 14 hips were determined to have poor outcome. An additional ten years of age at surgery, pre-operative minimal joint space < 2 mm, presence of a curtain osteophyte, and fair/poor congruency in abduction were identified as significant risk factors for poor outcome of RAO. CONCLUSIONS: Hips with curtain osteophyte should be evaluated carefully before RAO.
PURPOSE:Rotational acetabular osteotomy (RAO) is one of the surgical procedures for painful dysplastic hips. Although several risk factors for poor outcome of RAO have been reported, the presence of a curtain osteophyte in the acetabulum has not been evaluated as a possible risk factor. This study aimed to analyze the risk factors affecting the outcome of RAO and to clarify whether curtain osteophytes are one of the risk factors. METHODS: We retrospectively analyzed 87 hips in 78 patients with a mean age of 36 (range, 13-54) years. The mean follow-up period was 8.3 (range, 2.1-19.5) years. The radiographic severity of osteoarthritis was classified into four stages: pre-arthrosis, initial stage, advanced stage, and terminal stage. The Japanese Orthopaedic Association (JOA) hip score was used for clinical evaluation. Poor outcome was defined as a hip with a JOA score < 80 points or terminal-stage osteoarthritis at final follow-up. Several factors were evaluated by logistic regression analysis. RESULTS: At final follow-up, ten hips had a JOA score < 80 and nine hips had progressed to terminal-stage osteoarthritis. Since five hips had a JOA score < 80 as well as terminal-stage osteoarthritis, a total of 14 hips were determined to have poor outcome. An additional ten years of age at surgery, pre-operative minimal joint space < 2 mm, presence of a curtain osteophyte, and fair/poor congruency in abduction were identified as significant risk factors for poor outcome of RAO. CONCLUSIONS: Hips with curtain osteophyte should be evaluated carefully before RAO.
Authors: Michael B Millis; Michael Kain; Rafael Sierra; Robert Trousdale; Michael J Taunton; Young-Jo Kim; Scott B Rosenfeld; Ganesh Kamath; Perry Schoenecker; John C Clohisy Journal: Clin Orthop Relat Res Date: 2009-05-07 Impact factor: 4.176
Authors: Antonio Klasan; Thomas Neri; Charlotte Sommer; Murilo Anderson Leie; Philipp Dworschak; Markus D Schofer; Thomas J Heyse Journal: J Orthop Translat Date: 2019-02-14 Impact factor: 5.191