{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,19]],"date-time":"2025-11-19T06:50:33Z","timestamp":1763535033190},"reference-count":40,"publisher":"British Editorial Society of Bone & Joint Surgery","issue":"1","license":[{"start":{"date-parts":[[2010,1,1]],"date-time":"2010-01-01T00:00:00Z","timestamp":1262304000000},"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":[[2010,1]]},"abstract":"<jats:p> Second-generation metal-on-metal bearings were introduced as a response to the considerable incidence of wear-induced failures associated with conventional replacements, especially in young patients. We present the results at ten years of a consecutive series of patients treated using a metal-on-metal hip resurfacing. A distinct feature of the bearings used in our series was that they had been subjected to double-heat treatments during the post-casting phase of their manufacture. In the past these bearings had not been subjected to thermal treatments, making this a unique metal-on-metal bearing which had not been used before in clinical practice. <\/jats:p><jats:p> We report the outcome of 184 consecutive hips (160 patients) treated using a hybrid-fixed metal-on-metal hip resurfacing during 1996. Patients were invited for a clinicoradiological follow-up at a minimum of ten years. The Oxford hip score and anteroposterior and lateral radiographs were obtained. The mean age at operation was 54 years (21 to 75). A series of 107 consecutive hips (99 patients) who received the same prosthesis, but subjected to a single thermal treatment after being cast, between March 1994 and December 1995, were used as a control group for comparison. <\/jats:p><jats:p> In the 1994 to 1995 group seven patients (seven hips) died from unrelated causes and there were four revisions (4%) for osteolysis and aseptic loosening. In the 1996 group nine patients died at a mean of 6.9 years after operation because of unrelated causes. There were 30 revisions (16%) at a mean of 7.3 years (1.2 to 10.9), one for infection at 1.2 years and 29 for osteolysis and aseptic loosening. Furthermore, in the latter group there were radiological signs of failure in 27 (24%) of the 111 surviving hips. <\/jats:p><jats:p> The magnitude of the problem of osteolysis and aseptic loosening in the 1996 cohort did not become obvious until five years after the operation. Our results indicate that double-heat treatments of metal-on-metal bearings can lead to an increased incidence of wear-induced osteolysis. <\/jats:p>","DOI":"10.1302\/0301-620x.92b1.21530","type":"journal-article","created":{"date-parts":[[2010,1,1]],"date-time":"2010-01-01T00:22:43Z","timestamp":1262305363000},"page":"20-27","source":"Crossref","is-referenced-by-count":55,"title":["Ten-year results of a double-heat-treated metal-on-metal hip resurfacing"],"prefix":"10.1302","volume":"92-B","author":[{"given":"J.","family":"Daniel","sequence":"first","affiliation":[{"name":"The McMinn Centre, 25, Highfield Road, Birmingham, B15 3DP, UK."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"H.","family":"Ziaee","sequence":"additional","affiliation":[{"name":"The McMinn Centre, 25, Highfield Road, Birmingham, B15 3DP, UK."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Kamali","sequence":"additional","affiliation":[{"name":"Implant Development Centre Smith and Nephew Orthopaedics, Aurora House, Spa Park, Harrison Way, Leamington Spa CV31 2NB, UK."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C.","family":"Pradhan","sequence":"additional","affiliation":[{"name":"The McMinn Centre, 25, Highfield Road, Birmingham, B15 3DP, UK."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"T.","family":"Band","sequence":"additional","affiliation":[{"name":"Implant Development Centre Smith and Nephew Orthopaedics, Aurora House, Spa Park, Harrison Way, Leamington Spa CV31 2NB, UK."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D. 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