Effects of a Powered Knee-Ankle Prosthesis on Amputee Hip Compensations: A Case Series.

ABSTRACT: Transfemoral amputee gait often exhibits compensations due to the lack of ankle push-off power and control over swing foot position using passive prostheses. Powered prostheses can restore this functionality, but their effects on compensatory behaviors, specifically at the residual hip, are not well understood. This paper investigates residual hip compensations through walking experiments with three transfemoral amputees using a low-impedance powered knee-ankle prosthesis compared to their day-to-day passive prosthesis. The powered prosthesis used impedance control during stance for compliant interaction with the ground, a time-based push-off controller to deliver high torque and power, and phase-based trajectory tracking during swing to provide user control over foot placement. Experiment

SUBMITTER: Elery T 

PROVIDER: S-EPMC7849323 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature