Long-term results of total knee arthroplasty with single-radius versus multi-radius posterior-stabilized prostheses.

[ 11 ], who compared 75 SR (Triathlon) with 90 MR prostheses, reporting that the SR designs reduced the worst daily pain ( P = 0.003) over 3 years of follow-up; however, Oxford Knee Scores ( P = 0.09) and timed functional performance tasks ( P = 0.23) did not reach statistical significance.

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