{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,4,15]],"date-time":"2025-04-15T07:34:14Z","timestamp":1744702454329},"reference-count":28,"publisher":"British Editorial Society of Bone & Joint Surgery","issue":"6","license":[{"start":{"date-parts":[[2008,6,1]],"date-time":"2008-06-01T00:00:00Z","timestamp":1212278400000},"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":[[2008,6]]},"abstract":"<jats:p> The dysplasia cup, which was devised as an adjunct to the Birmingham Hip Resurfacing system, has a hydroxyapatite-coated porous surface and two supplementary neutralisation screws to provide stable primary fixation, permit early weight-bearing, and allow incorporation of morcellised autograft without the need for structural bone grafting. <\/jats:p><jats:p> A total of 110 consecutive dysplasia resurfacing arthroplasties in 103 patients (55 men and 48 women) performed between 1997 and 2000 was reviewed with a minimum follow-up of six years. The mean age at operation was 47.2 years (21 to 62) and 104 hips (94%) were Crowe grade II or III. <\/jats:p><jats:p> During the mean follow-up of 7.8 years (6 to 9.6), three hips (2.7%) were converted to a total hip replacement at a mean of 3.9 years (2 months to 8.1 years), giving a cumulative survival of 95.2% at nine years (95% confidence interval 89 to 100). The revisions were due to a fracture of the femoral neck, a collapse of the femoral head and a deep infection. There was no aseptic loosening or osteolysis of the acetabular component associated with either of the revisions performed for failure of the femoral component. No patient is awaiting a revision. <\/jats:p><jats:p> The median Oxford hip score in 98 patients with surviving hips at the final review was 13 and the 10th and the 90th percentiles were 12 and 23, respectively. <\/jats:p>","DOI":"10.1302\/0301-620x.90b6.19875","type":"journal-article","created":{"date-parts":[[2008,6,6]],"date-time":"2008-06-06T14:19:40Z","timestamp":1212761980000},"page":"715-723","source":"Crossref","is-referenced-by-count":42,"title":["Results of the Birmingham Hip Resurfacing dysplasia component in severe acetabular insufficiency"],"prefix":"10.1302","volume":"90-B","author":[{"given":"D. J. 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