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The mean age of the patients at surgery was 51 years (36 to 62) and the mean length of follow-up was 110 months (84 to 129).<\/jats:p><jats:p>The mean pre-operative Harris hip score of 47 points improved to 93 points at final follow-up. The polyethylene liner was exchanged in two hips during this period and one broken acetabular component was revised. The mean linear wear rate of polyethylene was 0.07 mm\/year and peri-acetabular osteolysis was seen in two hips (1.9%). Kaplan-Meier analysis indicated that the survival of the acetabular component without revision was 97.8% (95% confidence interval 0.956 to 1.000) at ten years.<\/jats:p><jats:p>Our study has shown that the results of THA with a cementless expansion acetabular component and an alumina-polyethylene bearing surface are good.<\/jats:p>","DOI":"10.1302\/0301-620x.87b6.15380","type":"journal-article","created":{"date-parts":[[2005,5,23]],"date-time":"2005-05-23T18:33:29Z","timestamp":1116873209000},"page":"776-780","source":"Crossref","is-referenced-by-count":18,"title":["The use of cementless expansion acetabular component and an alumina-polyethylene bearing in total hip arthroplasty for osteonecrosis"],"prefix":"10.1302","volume":"87-B","author":[{"given":"Y.-G.","family":"Kim","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.-Y.","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.-J.","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"B.-C.","family":"Park","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.-T.","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.-C.","family":"Ihn","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Kyungpook National University School of Medicine, Sam-Duck 2 Ga, 50, Jung-Gu 700-721, Korea."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"42","reference":[{"key":"R1","doi-asserted-by":"crossref","unstructured":"Latimer HA, Lachiewicz PF.Porous-coated acetabular components with screw fixation: five to ten-year results. 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