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Published on: May 5, 2023
Comparative flexion after rotating-platform vs fixed-bearing total knee arthroplasty
Matthew C Evans1, Eric M Parsons, Richard D Scott
1Melbourne Orthopedic Group, Windsor, Australia.
The Journal of Arthroplasty
|October 10, 2006
Summary
This study compared rotating-platform and fixed-bearing total knee arthroplasties. No significant difference in knee flexion was found between the two designs after a minimum 2-year follow-up.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Total knee arthroplasty (TKA) is a common procedure for osteoarthritis.
- Different tibial bearing designs, such as rotating-platform and fixed-bearing, aim to improve outcomes.
- Isolating the effect of tibial design on functional outcomes is crucial.
Purpose of the Study:
- To compare the functional outcomes, specifically knee flexion, of rotating-platform versus fixed-bearing cruciate-retaining total knee arthroplasty.
- To isolate the impact of tibial articular design on patient outcomes.
Main Methods:
- Retrospective review of 213 patients (113 rotating-platform, 100 fixed-bearing) undergoing TKA for osteoarthritis.
- All surgeries performed by senior surgeons at two institutions, utilizing cruciate-retaining prostheses with patellar resurfacing.
- Confounding variables including pathology, surgeon, institution, and soft-tissue balancing were minimized.
Main Results:
- No statistically significant difference in knee flexion was observed between the rotating-platform and fixed-bearing TKA groups.
- The minimum follow-up period was two years.
Conclusions:
- Tibial articular design (rotating-platform vs. fixed-bearing) did not significantly affect knee flexion in cruciate-retaining total knee arthroplasty at a minimum 2-year follow-up.
- Further research may be needed to explore other functional parameters or long-term outcomes.
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