title: Successful performance of the bi-metric uncemented femoral stem at a minimum follow-up of 13 years in young patients.
abstract: We report the mean 15.2 year follow-up results for a porous coated version of the Bi-Metric (Biomet UK Ltd, Bridgend, UK) uncemented femoral stem in young patients. Sixty-four hips were implanted into 54 patients (mean age, 54.3 years) and followed up using the Hospital for Special Surgery score and regular radiographs. The first 13 patients had a TTAP-ST acetabulum (Biomet UK), the remainder receiving a Universal cup (Biomet UK). At 15.2 years, there were no stem failures or femoral revisions. The mean Hospital for Special Surgery score was 34.7 (20-40), and there was no evidence of stem loosening radiologically. There were 3 acetabular revisions and 3 liner changes at 10 years, with a further 5 cup revisions and 9 liner changes at final follow-up.
authors.affiliation: Department of Trauma and Orthopaedic Surgery, Ipswich Hospital, Ipswich, Suffolk, UK.
authors.forename: Howard
authors.initials: H
authors.lastname: Davies
authors.forename: Ben
authors.initials: B
authors.lastname: Ollivere
authors.forename: Joseph
authors.initials: J
authors.lastname: Motha
authors.forename: Matthew
authors.initials: M
authors.lastname: Porteous
authors.forename: Adrian
authors.initials: A
authors.lastname: August
mesh_terms: D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000601:surgery*; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D015994:Incidence; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D017063:Outcome Assessment, Health Care; D011446:Prospective Studies; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation; D013167:Spondylitis, Ankylosing / Q000601:surgery*; D016896:Treatment Outcome