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Journal of Bone and Joint Surgery - British Volume, Vol 91-B, Issue 6,
720-724.
doi: 10.1302/0301-620X.91B6.21417 Copyright © 2009 by British Editorial Society of Bone and Joint Surgery The continued value of clinical and radiological surveillanceTHE CHARNLEY ELITE PLUS HIP REPLACEMENT SYSTEM AT 12 YEARSB. Ollivere, MRCS, Specialist Registrar1; C. Darrah, RGN, MSc, Nurse Research Manager1; R. C. Brankin, MRCS, Clinical Fellow1; S. T. Donnell, FRCS(Orth), MD, Consultant Orthopaedic Surgeon1; and N. P. Walton, FRCS(Orth), Consultant Orthopaedic Surgeon11 Institute of Orthopaedics Norfolk & Norwich University Hospital, Colney Lane, Colney, Norwich NR4 7UY, UK. Correspondence should be sent to Dr B. Ollivere; e-mail: ben{at}ollivere.co.uk
We report the follow-up at 12 years of the use of the Elite Plus total hip replacement (THR). We have previously reported the results at a mean of 6.4 years. Of the 217 patients (234 THRs), 83 had died and nine had been lost to follow-up. The patients were reviewed radiologically and clinically using the Oxford hip score. Of the 234 THRs, 19 (8.1%) had required a revision by the final follow-up in all but one for aseptic loosening. Survivorship analysis for revision showed a survival of 93.9% (95% confidence interval (CI) 89.2 to 96.5) at ten years, and of 88.0% (95% CI 81.8 to 92.3) at 12 years. At the final follow-up survival analysis showed that 37% (95% CI 37.3 to 44.7) of the prostheses had either failed radiologically or had been revised. Patients with a radiologically loose femoral component had a significantly poorer Oxford hip score than those with a well-fixed component (p = 0.03). Radiological loosening at 6.4 years was predictive of failure at 12 years. Medium-term radiographs and clinical scores should be included in the surveillance of THR to give an early indication of the performance of specific implants.
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