ExoProsthetics: Assisting Above-Knee Amputees with a Lightweight Powered Hip Exoskeleton

IEEE ... International Conference on Rehabilitation Robotics : [proceedings]
Marshall K IshmaelTommaso Lenzi

Abstract

In this paper, we explore the effect of residual hip assistance in one above-knee amputee subject using a novel lightweight powered hip exoskeleton. Differently from a powered prosthesis, a powered hip exoskeleton adds mass proximally. Thus, we expect that the negative effect of the added mass will be lower for a powered hip exoskeleton than a powered ankle and knee prosthesis. Consequently, residual-hip assistance may more easily lead to a net reduction of metabolic effort. To preliminarily assess this hypothesis, we measured the physiological cost index (PCI) while an above-knee subject walked with and without a powered hip exoskeleton. Experimental results show 20.5% reduction of PCI when walking with the powered hip exoskeleton.

Citations

Jul 29, 2021·Journal of Neuroengineering and Rehabilitation·Romain BaudMohamed Bouri
Oct 13, 2021·Nature Medicine·Marshall K IshmaelTommaso Lenzi

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