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Energy storage and return prosthetic feet have only marginally improved trans-tibial amputee gait efficiency compared to that with solid ankle cushioned heel feet

Gardiner, JD, Bari, AZ, Howard, D and Kenney, LPJ 'Energy storage and return prosthetic feet have only marginally improved trans-tibial amputee gait efficiency compared to that with solid ankle cushioned heel feet' , Journal of Rehabilitation Research and Development . (In Press)

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Abstract

Energy storage and return (ESR) feet have long been assumed to promote metabolically efficient amputee gait. However, despite being prescribed for approximately thirty years, there is limited evidence that they achieve this desired function. Here, we report a meta-analysis of data from ten studies which met our selection criteria to determine whether amputee walking with ESR feet is more efficient than with conventional solid ankle cushioned heel (SACH) feet. Additionally, the data were tested for a relationship with walking speed; since it has been suggested ESR feet might perform better at higher speeds. The raw data are highly variable due to differences in study protocols; therefore we normalised the data and found a statistically significant difference (p < 0.001) between ESR and SACH feet. However, the magnitude of this difference is small, with the cost of transport (COT) with ESR feet being 97.3% of the cost with SACH feet. No relationship between ESR COT and speed was found (p = 0.191). In the authors’ opinion, these results suggest that ESR feet are not effective at improving amputee COT to a clinically relevant degree. We hypothesise this is due to limited push-off at the end of stance compared with able-bodied ankles.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Schools > School of Health Sciences
Journal or Publication Title: Journal of Rehabilitation Research and Development
Publisher: U.S. Department of Veterans Affairs
ISSN: 0748-7711
Funders: Engineering and Physical Sciences Research Council (EPSRC)
Depositing User: JD Gardiner
Date Deposited: 16 Dec 2015 10:08
Last Modified: 21 Mar 2016 11:50
URI: http://usir.salford.ac.uk/id/eprint/37256

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