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Journal of Bone and Joint Surgery - British Volume, Vol 91-B, Issue 2,
176-179.
doi: 10.1302/0301-620X.91B2.21654 Copyright © 2009 by British Editorial Society of Bone and Joint Surgery Six-year results of a prospective study of metal ion levels in young patients with metal-on-metal hip resurfacingsJ. Daniel, FRCS, MS(Orth), Director of Research1; H. Ziaee, BSc(Hons), Biomedical Scientist1; C. Pradhan, FRCS, MCh(Orth), Staff Orthopaedic Surgeon1; and D. J. W. McMinn, FRCS, Consultant Orthopaedic Surgeon11 The McMinn Centre, 25 Highfield Road, Birmingham B15 3DP, UK. Correspondence should be sent to Mr J. Daniel; e-mail: joseph.daniel{at}yahoo.co.uk
We describe the findings at six years in an ongoing prospective clinicoradiological and metal ion study in a cohort of 26 consecutive male patients with unilateral Birmingham Hip Resurfacing arthroplasties with one of two femoral head sizes (50 mm and 54 mm). Their mean age was 52.9 years (29 to 67). We have previously shown an early increase in the 24-hour urinary excretion of metal ions, reaching a peak at six months (cobalt) and one year (chromium) after operation. Subsequently there is a decreasing trend in excretion of both cobalt and chromium. The levels of cobalt and chromium in whole blood also show a significant increase at one year, followed by a decreasing trend until the sixth year. This article has been cited by other articles:
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