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- Talk
- 22/09/2021
- UK
A Matched Comparison of the Long Term Outcomes of Cemented and Cementless Total Knee Replacements, Based on Data from the National Databases: An Analysis from the National Joint Registry of England, Wales, Northern Ireland and Isle of Man
Description
In this presentation, Hasan Mohammad introduces his research on the long-term outcomes of cemented versus cementless total knee replacements (TKRs), conducted at the University of Oxford. He outlines that while 95% of TKRs are currently cemented, there are significant issues such as patient dissatisfaction and high revision rates, particularly among younger patients. The study is motivated by the lack of comprehensive studies comparing the two methods and builds upon previous findings showing better outcomes with cementless unicompartmental replacements.
The research utilized registry-based data to compare over 22,000 TKRs from 2004 to 2018, examining revision rates, re-operation rates, medical complications, and the Oxford knee score. Results indicated that although both types had high 10-year implant survival rates (96% for cemented, 95.5% for cementless), the cemented group had statistically better outcomes despite the minimal absolute difference. Pain-related revisions were significantly more common in cementless implants, while infections led to higher revisions in cementless cases.
Cementless implants exhibited higher rates of medical complications such as chest and urinary tract infections post-operation, though no significant differences were noted in long-term patient survival or overall complications like stroke or DVT. The analysis of the Oxford knee score showed a slightly lower postoperative score for cementless implants, yet both types performed well overall, maintaining above 95% implant survivals at ten years. The study concluded that while cemented TKRs seem to perform slightly better, especially regarding patient-reported outcomes, the overall interactiveness of age with revision rates and outcomes was negligible.