Mortality and implant revision rates of hip arthroplasty in patients with osteoarthritis: registry based cohort study

摘要

STUDY QUESTION Do mortality and implant revision rates differ in osteoarthritis patients undergoing cemented or uncemented total hip replacement or hip resurfacing?SUMMARY ANSWER Flexible parametric survival analyses, adjusted for confounding factors, identified a slightly higher mortality rate and a slightly lower revision rate for patients undergoing cemented ratherthan uncemented total hip replacement. In analyses restricted to men, the mortality rate was lowest forthose undergoing Birmingham hip resurfacing.WHAT IS KNOWN AND WHATTHIS PAPER ADDSThe National Joint Registry 2011 report gave only unadjusted mortality rates without consideration of confounding factors. The current analysis shows that small differences in mortality rates still exist between procedure groups, even after adjustment for available confounders, in addition to small differences in implant revision rates.