Journal of Bone and Joint Surgery - British Volume, Vol 89-B, Issue 4,
441-448.
doi: 10.1302/0301-620X.89B4.18054
Copyright © 2007 by British Editorial Society of Bone and Joint Surgery
Chromium and cobalt ion release following the Durom high carbon content, forged metal-on-metal surface replacement of the hip
P.-A. Vendittoli, MD, MSc, FRCS, Associated Professor of Surgery1;
S. Mottard, MD, Orthopaedic Registrar2;
A. G. Roy, MD, FRCS, Associated Professor of Surgery1;
C. Dupont, MSc, Statistician2; and
M. Lavigne, MD, FRCS, Associated Professor of Surgery1
1 Surgery Department
2 Maisonneuvé-Rosemont Hospital, Montreal University, 5415 Boulevard de lAssomption, Montréal, Québec HIT 4B3, Canada.
Correspondence should be sent to Mr P.-A. Vendittoli; e-mail: pa.vendittoli{at}videotron.ca
We evaluated the concentrations of chromium and cobalt ions in blood after metal-on-metal surface replacement arthroplasty using a wrought-forged, high carbon content chromium-cobalt alloy implant in 64 patients. At one year, mean whole blood ion levels were 1.61 µg/L (0.4 to 5.5) for chromium and 0.67 µg/L (0.23 to 2.09) for cobalt. The pre-operative ion levels, component size, female gender and the inclination of the acetabular component were inversely proportional to the values of chromium and/or cobalt ions at one year postoperatively. Other factors, such as age and level of activity, did not correlate with the levels of metal ions. We found that the levels of the ions in the serum were 1.39 and 1.37 times higher for chromium and cobalt respectively than those in the whole blood.
The levels of metal ions obtained may be specific to the hip resurfacing implant and reflect its manufacturing process.
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eLetters:
Read all eLetters
- Titanium release from the Durom Hip Resurfacing
- Joseph Daniel, et al.
- J Bone Joint Surg Br Online, 3 Aug 2007
[Full text]
- Authors' reply:
- Pascal-Andre Vendittoli, et al.
- J Bone Joint Surg Br Online, 22 Aug 2007
[Full text]
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