%0 Journal Article %A S. MacDonald %A R. B. Bourne %A D. Chess %A R. W. McCalden %A C. H. Rorabeck %A A. Thompson %T DO METAL ION LEVELS IN METAL-ON-METAL THAS CHANGE OVER TIME – MIDTERM RESULTS OF A PROSPECTIVE RANDOMISED CLINICAL TRIAL %D 2009 %J Orthopaedic Proceedings %P 239-239 %V 91-B %N SUPP_II %R 10.1302/0301-620X.91BSUPP_II.0910239b %U https://doi.org/10.1302/0301-620X.91BSUPP_II.0910239b %K