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Updated: Feb 3, 2026

Reverse Total Shoulder Arthroplasty
Published on: July 5, 2011
A Biomechanical Foot-Worn Device Improves Total Knee Arthroplasty Outcomes
Eytan M Debbi1, Benjamin Bernfeld2, Amir Herman3
1Biorobotics and Biomechanics Lab, Faculty of Mechanical Engineering, Technion-Israel Institute of Technology, Haifa, Israel.
Background:
Biomechanics after total knee arthroplasty (TKA) often remain abnormal and may lead to prolonged postoperative recovery. The purpose of this study is to assess a biomechanical therapy after TKA.
Methods:
This is a randomized controlled trial of 50 patients after unilateral TKA. One group underwent a biomechanical therapy in which participants followed a walking protocol while wearing a foot-worn biomechanical device that modifies knee biomechanics and the control group followed a similar walking protocol while wearing a foot-worn sham device. All patients had standard physical therapy postoperatively as well. Patients were evaluated throughout the first postoperative year with clinical measures and gait analysis.
Results:
Improved outcomes were seen in the biomechanical therapy group compared to the control group in pain scores (88% vs 38%, P = .011), function (86% vs 21%, P = .001), knee scores (83% vs 38%, P = .001), and walking distance (109% vs 47%, P = .001) at 1 year. The therapy group showed healthier biomechanical gait patterns in both the sagittal and coronal planes at 1 year.
Conclusion:
A postoperative biomechanical therapy improves outcomes following TKA and should be considered as an additional therapy postoperatively.
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