Amputee socks: Sock thickness changes with normal use

Prosthetics and Orthotics International
John C CagleJoan E Sanders

Abstract

Prosthetic socks are expected to decrease in thickness and have reduced volume accommodation with normal use. It is unknown, however, to what degree they reduce in thickness over time. The goal of this study was to determine a correlation between the age of a prosthetic sock (defined as the out-of-package time) and the resulting change in thickness under standardized weight-bearing and non-weight-bearing conditions. Experimental, mechanical assessment. Used prosthetic socks were donated by donors with transtibial amputation. Sock thickness was measured on a custom instrument under conditions representative of normal use. Stress-thickness response was compared to that of equivalent new socks to quantify the effects of use on sock performance. Sock thickness changed non-linearly over time. On average, socks were 75% ± 17% of their initial thickness after 1 month, while socks older than 1 month were 72% ± 18% of their initial thickness. The elasticity of socks did not change with age. The volume accommodation provided by used socks cannot be reliably predicted by ply or age. Direct measurement of total sock thickness may provide meaningful insight to quantify prosthetic users' socket fit and guide volume accommodation recommendati...Continue Reading

References

Jun 20, 2001·Prosthetics and Orthotics International·S G Zachariah, J E Sanders
Apr 26, 2006·Archives of Physical Medicine and Rehabilitation·Glenn K KluteJoseph M Czerniecki
Jan 10, 2012·Prosthetics and Orthotics International·Joan E SandersAri Karchin
Aug 30, 2013·Prosthetics and Orthotics International·Krittika D'SilvaJoan E Sanders
Nov 19, 2013·Prosthetics and Orthotics International·John C CagleJoan E Sanders

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Citations

Mar 14, 2017·Medical Engineering & Physics·A S DickinsonP R Worsley
Dec 14, 2017·Medical & Biological Engineering & Computing·John C CagleJoan E Sanders
Jun 26, 2020·Prosthetics and Orthotics International·Eric NickelAndrew Hansen
Jan 1, 2016·Journal of Rehabilitation Research and Development·Joan E SandersMarcia A Ciol
Mar 25, 2019·Journal of Prosthetics and Orthotics : JPO·John C CagleJoan E Sanders

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Methods Mentioned

BETA
amputation

Software Mentioned

MATLAB

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