Passive Ankle-Foot Prosthesis Prototype with Extended Push-Off
نویسندگان
چکیده
منابع مشابه
Passive Ankle-Foot Prosthesis Prototype with Extended Push-Off
Current commercially available prosthetic feet have succeeded in decreasing the metabolic cost and increasing the speed of walking compared to walking with conventional, mostly solid prosthetic feet. However, there is still a large discrepancy when compared with a non‐disabled gait, and the walking pattern remains strongly disturbed. During the stance phase of the leg, t...
متن کاملOptimization of Ankle-Foot Prosthesis with Active Alignment by Passive Elements
Today, often ankle’s active prosthesis is used for transtibial amputated people’s walking, because these prostheses have some advantages such as increasing power and decreasing metabolism. In most of active prosthesis in order to create a movement or increase the force at the push-off, electrical actuators are used like a motor. In cases where a higher-power motor is necessary, the capacity, we...
متن کاملEffect of push-off timing on metabolic cost during walking with a universal ankle-foot prosthesis emulator
1 Introduction The ankle delivers about half of the total mechanical work during walking. Lower-limb amputees using conventional passive-elastic prostheses experience 20 to 30% higher metabolic cost than able-bodied individuals, perhaps because these prostheses do not provide net positive work during the course of a step [1]. To address this problem, companies are developing battery-powered pro...
متن کاملIncreasing ankle push-off work with a powered prosthesis does not necessarily reduce metabolic rate for transtibial amputees.
Amputees using passive ankle-foot prostheses tend to expend more metabolic energy during walking than non-amputees, and reducing this cost has been a central motivation for the development of active ankle-foot prostheses. Increased push-off work at the end of stance has been proposed as a way to reduce metabolic energy use, but the effects of push-off work have not been tested in isolation. In ...
متن کاملImpulsive ankle push-off powers leg swing in human walking.
Rapid unloading and a peak in power output of the ankle joint have been widely observed during push-off in human walking. Model-based studies hypothesize that this push-off causes redirection of the body center of mass just before touch-down of the leading leg. Other research suggests that work done by the ankle extensors provides kinetic energy for the initiation of swing. Also, muscle work is...
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ژورنال
عنوان ژورنال: International Journal of Advanced Robotic Systems
سال: 2013
ISSN: 1729-8814,1729-8814
DOI: 10.5772/55170