Analysis of a new polycentric above-knee prosthesis with a pneumatic swing phase control.

Patil, K M; Chakraborty, J K · J Biomech · 1991

basic_science · Level V

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Abstract

The four-bar linkage mechanism used by many designers for the knee joint of an above-knee prosthesis can provide knee rotation suitable for walking only. In Afro-Asian countries people are habituated to the squatting posture in their daily activities. A six-bar linkage knee-ankle mechanism above-knee prosthesis with a pneumatic swing phase control is developed and its analysis shows its suitability for producing a motion closely resembling that of a normal subject during walking and squatting.

Medical subject headings