After reviewing thousands of case studies going back 25 years across six countries, researchers at the University of Bristol say they indicate that eight out of 10 total knee replacements (TKRs) and six out of 10 total hip replacements (THEs) will still be in place after 25 years.
…We identified 63,158 patients who had undergone total hip replacement and 54,276 who had total knee replacement between Jan 1, 1991, and Aug 10, 2011, and followed up these patients to a maximum of 20 years…
…researchers analyzed data from the Clinical Practice Research Datalink on just over 63,000 patients who had undergone a total hip replacement and 54,000 that had total knee replacements. The surgeries took place between January 1, 1991 and August 10, 2011. Researchers followed the patients for a maximum of 20 years, to see how they made out with their prosthetic joints…
Results showed the following:
For total hip replacement, the 10-year implant survival rate was 95-96 percent, and the 20-year rate 85 percent.
For total knee replacement, the 10-year implant survival rate was 96 percent, and 20-year rate 89 percent.
The lifetime risk of requiring revision surgery in patients who went
Assessment of Durability and Function at Minimum 35-year Follow Up of THR in Patients 50 and Under
Paper 773, presented at the AAOS 2014 Annual Meeting, March 11-15, 2014, New Orleans, Louisiana.
…The purpose of the present study was to evaluate the clinical, radiographic and functional outcomes of Charnley total hip arthroplasty (THA) in patients under age 50 (a group that continues to actively function with their THA) at minimum 35 years of follow up….
…This study demonstrates the durability of cemented total hip replacements (THR) in a young patient population. Although 63.5% percent of the original hip replacements were functioning at the latest follow-up examination or at the time of death, a significant decrease in activity level as measured by functional scores was seen over time…