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Updated: Jul 7, 2026

Using a Knee Arthrometer to Evaluate Tissue-specific Contributions to Knee Flexion Contracture in the Rat
Published on: November 9, 2018
Extensor mechanism function in single-radius vs multiradius femoral components for total knee arthroplasty
James Hall1, Steven N Copp, Wendy S Adelson
1The Center Orthopaedic and Neurosurgical Care and Research, Bend, Oregon, USA.
Abstract:
The early outcomes of 2 newer-generation posterior cruciate ligament-retaining fixed-bearing total knee arthroplasty (TKA) implant designs were assessed to determine if a single sagittal radius femoral design has an advantage in obtaining earlier knee range of motion and function when compared with a contemporary multiradius femoral design. Total knee arthroplasty patients were prospectively randomized to receive either a single sagittal radius femoral design (n=50) or a multiradius femoral design (n=50). Knee extensor mechanism function after TKA with either a single sagittal radius or multiradius implant was comparable in contemporary posterior cruciate ligament-retaining TKA designs.
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