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- Title
Curtain osteophytes are one of the risk factors for the poor outcome of rotational acetabular osteotomy.
- Authors
Kanezaki, Shiho; Nakamura, Shigeru; Nakamura, Masaki; Yokota, Isao; Matsushita, Takashi
- Abstract
<bold>Purpose: </bold>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.<bold>Methods: </bold>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.<bold>Results: </bold>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.<bold>Conclusions: </bold>Hips with curtain osteophyte should be evaluated carefully before RAO.
- Subjects
OSTEOTOMY; ARTIFICIAL hip joint complications; BONE spurs; OSTEOARTHRITIS; THERAPEUTICS; ACETABULUM surgery; HIP joint diseases; CONGENITAL hip dislocation; LONGITUDINAL method; METAPLASTIC ossification; RETROSPECTIVE studies; DISEASE complications
- Publication
International Orthopaedics, 2017, Vol 41, Issue 2, p265
- ISSN
0341-2695
- Publication type
journal article
- DOI
10.1007/s00264-016-3183-6