G0200304 Dynamic Rollover Analysis of Prosthetic Foot-shoe Combinations based on ISO22675 Testing Machine

Abstract

This study performed an usability test under the gait conditions of 70.0[kg] loading level and 2.0[s] cyclic loading period with the testing equipment which reproduced a motion walk based on strength testing method (ISO22675) of the prosthetic foot part in a walk period. I evaluated the influence that the combination of prosthetic foot part and Stable/Unstable shoes gave in walk properties using three-dimensional Rollover Shape. As a result, I clarified the following characteristics than dynamic Rollover properties of the combination of prosthetic foot part and Stable/Unstable shoes. 1) By the Stable shoes wearing, I can relax a shock to occur at the time of heel grounding and can maintain the walk function of the prosthetic foot part. 2) Because three-dimensional Rollover Shape is an arc shape with both aspects by the unstable shoes wearing, a flexible center of gravity can move to not only the anteroposterior direction but also the inside and outside direction.