Abstract Summary
This study addressed the biomechanical effect of varying forefoot stiffness in a foot prosthesis during different ambulation tasks. The external mean ankle moment arm (EMAMA) outcome measure captures the mean dynamic effects of changes in center of pressure (CoP) that impact body dynamics. Findings show that EMAMA shifts in different tasks (up and down ramps and stairs) relative to level walking, and can be modulated by changes in forefoot stiffness. Control of prosthetic forefoot stiffness to match natural EMAMA changes may improve biomimetic behavior.
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