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Hip and knee replacements are intended to provide long-term relief from pain and disability, but given enough time, prosthetic joints inevitably will fail, and patients will need revisions. To determine the probable longevity of total hip replacements (THRs) and total knee replacements (TKRs), researchers examined data from case series and from national registry reports.
The authors found that reports of case series generally were of low quality and were susceptible to selection and publication bias; estimates derived from national registry data, specifically from Australia and Finland, were more accurate. According to 92 THR registry reports (about 215,000 procedures), 89%, 70%, and 58% of THRs lasted 15, 20, and 25 years, respectively. Acc…