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Most existing transtibial prostheses are energetically passive. Their ankle joints are either rigid or rotatable in a limited range, and their feet are single-segment structures without toe joints. Amputees using these passive prostheses exhibit nonsymmetrical gait patterns, consume more metabolic energy, and walk at lower speeds compared with able-bodied individuals. In this paper, we design and...
This paper presents the design of a novel powered ankle-foot prosthesis with compliant ankle and segmented foot. The powered compliant ankle is proposed to replace the able-bodied ankle which can provide sufficient power to propel the body upward and forward during bipedal walking. In order to make the walking gaits of the amputees more stable and natural, we introduce segmented foot with toe joint...
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