Rotational acetabular osteotomy for hip dysplasia: spontaneous medial enlargement of the acetabulum |
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| Authors: | Yasunaga Y Ikuta Y Shigenobu T Nakamura S Yamamoto S Nakashiro J |
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| Affiliation: | Department of Orthopaedic Surgery, Hiroshima University School of Medicine, Japan. y-yuji@mcai.med.hiroshima-u.ac.jp |
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| Abstract: | We followed 56 patients (63 joints) who had undergone rotational acetabular osteotomy (RAOs) between 1987 and 1993, mean 7 (5-12) years. The Merle d'Aubigné score increased by 15 points or more in 59 and decreased in 4 hips. The arthrosis progressed in 5 joints. In about 2/3 of the cases, we observed some medial and/or lateral expansion of the subchondral bone in the acetabulum 3 years postoperatively, suggesting enlargement of the load-bearing area. |
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