Abstract
This study investigates joint kinematics, joint angular positions, and orbital dynamic stability of human walking with different prosthetic feet by using graphical methods of phase plane portraits, Poincare maps and Floquet multipliers, respectively. The Flex foot, SACH foot, Seattle foot and one non-specific optimized foot are taken as the research objects. Numerical experiments are performed to compare and evaluate human locomotion traits on several aspects by focusing on the concerned four kinds of prosthetic feet.
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