Intended for healthcare professionals

Letters New hip and knee replacements

Conclusions from knee and hip registry data miss the point

BMJ 2008; 337 doi: (Published 16 September 2008) Cite this as: BMJ 2008;337:a1677
  1. Justin P Cobb, professor of orthopaedic surgery1
  1. 1Imperial College, London W6 8RF
  1. j.cobb{at}

    Your report on a national joint registry data analysis concludes erroneously and misleadingly that unicondylar knee replacements and hip resurfacings fare worse than total knee and hip replacements.1 In fact, both do better.2 3

    The paper reports on the reoperation rate for each procedure but not the …

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