Use of a powered ankle-foot prosthesis reduces the metabolic cost of uphill walking and improves leg work symmetry in people with transtibial amputations

Journal of the Royal Society, Interface
Jana R Montgomery, Alena M Grabowski

Abstract

People with transtibial amputations (TTAs) who use a powered ankle-foot prosthesis have equivalent metabolic costs and step-to-step transition work for level-ground walking over a range of speeds compared to non-amputees. The effects of using a powered compared to passive-elastic prosthesis for sloped walking are unknown. We sought to understand how the use of passive-elastic compared to powered ankle-foot prostheses affect metabolic cost and step-to-step transition work during sloped walking. Ten people (six M, four F) with TTAs walked 1.25 m s-1 at 0°, ±3°, ±6° and ±9° using their own passive-elastic prosthesis and the BiOM powered ankle-foot prosthesis, while we measured metabolic rates, kinematics and kinetics. We calculated net metabolic power, individual leg step-to-step transition work and individual leg net work symmetry. The net metabolic power was 5% lower during walking on +3° and +6° uphill slopes when subjects used the BiOM compared to their passive-elastic prosthesis (p < 0.05). The use of the BiOM compared to a passive-elastic prosthesis did not affect individual leg step-to-step transition work (p > 0.05), but did improve individual leg net work symmetry on +6° and +9° uphill slopes (p < 0.01). People with TTAs ...Continue Reading

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Citations

Jun 5, 2020·Prosthetics and Orthotics International·Michael ErnstThomas Schmalz
Oct 2, 2020·Scientific Reports·Max K Shepherd, Elliott J Rouse
Nov 19, 2020·EFORT Open Reviews·Gerhard M HobuschReinhard Windhager
Mar 18, 2021·Journal of Neuroengineering and Rehabilitation·Jay KimDeanna H Gates
Mar 9, 2021·Archives of Physical Medicine and Rehabilitation·Han HoudijkTrienke IJmker
Nov 7, 2020·Journal of Biomechanics·A Doğukan Keleş, Can A Yucesoy
Jun 22, 2021·Journal of Biomechanics·Jay KimDeanna H Gates
Sep 23, 2021·Journal of Neuroengineering and Rehabilitation·Jenny Anne MaunKota Z Takahashi
Oct 5, 2021·The Journal of Experimental Biology·Kiisa Nishikawa, Thomas G Huck

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