{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T17:03:12Z","timestamp":1761843792675},"reference-count":34,"publisher":"British Editorial Society of Bone & Joint Surgery","issue":"9","license":[{"start":{"date-parts":[[2008,9,1]],"date-time":"2008-09-01T00:00:00Z","timestamp":1220227200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/online.boneandjoint.org.uk\/TDM"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Journal of Bone and Joint Surgery. British volume"],"published-print":{"date-parts":[[2008,9]]},"abstract":"<jats:p> We report the outcome at a minimum of five years of 110 consecutive metal-on-metal Birmingham Hip Resurfacing arthroplasties in 98 patients. The procedures were performed between October 1999 and June 2002 by one surgeon. All patients were followed up clinically and radiologically. The mean follow-up was 71 months (60 to 93). Revision of either component was defined as failure. <\/jats:p><jats:p> The mean Harris Hip score at follow-up was 96.4 (53 to 100). The mean Oxford hip score was 41.9 (16 to 57) pre-operatively and 15.4 (12 to 49) post-operatively (p &lt; 0.001). The mean University of California Los Angeles activity score was 3.91 (1 to 10) pre-operatively and 7.5 (4 to 10) post-operatively (p &lt; 0.001). <\/jats:p><jats:p> There were four failures giving a survival at five years of 96.3% (95% confidence interval 92.8 to 99.8). When applying a new method to estimate narrowing of the femoral neck we identified a 10% thinning of the femoral neck in 16 hips (14.5%), but the relevance of this finding to the long-term outcome remains unclear. <\/jats:p><jats:p> These good medium-term results from an independent centre confirm the original data from Birmingham. <\/jats:p>","DOI":"10.1302\/0301-620x.90b9.20524","type":"journal-article","created":{"date-parts":[[2008,8,31]],"date-time":"2008-08-31T21:17:38Z","timestamp":1220217458000},"page":"1137-1142","source":"Crossref","is-referenced-by-count":95,"title":["Birmingham hip resurfacing arthroplasty"],"prefix":"10.1302","volume":"90-B","author":[{"given":"G. N. A.","family":"Heilpern","sequence":"first","affiliation":[{"name":"King\u2019s College Hospital, Denmark Hill, London SE5 9RS, UK."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N. 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