Socket release/relock: An innovative mechanism to maintain residual limb volume

Socket release/relock: An innovative mechanism to maintain residual limb volume

Management of socket fit is challenging for people using lower-limb prostheses because of residual limb volume fluctuation throughout the day. Releasing socket pressures during sitting (partial doffing) may help users increase their limb volume after they have undergone volume loss earlier in the da...

Full description

Saved in:
Bibliographic Details
Published in:Medical engineering & physics Vol. 90; pp. 100 - 106
Main Authors: Gurrey, Clement J, Garbini, Joseph L, Bennett, Samuel P, Wang, Horace Y, Allyn, Katheryn J, Friedly, Janna L, Hafner, Brian J, McLean, Jake B, Larsen, Brian G, Sanders, Joan E.
Format: Journal Article
Language:English
Published: England Elsevier Ltd 01-04-2021
Subjects:
Accommodation
Amputee
Elevated vacuum
Prosthesis
Residual limb
Socket
Socket fit
Volume
Residual limb
Socket fit
Volume
Amputee
Prosthesis
Accommodation
Socket
Elevated vacuum
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Management of socket fit is challenging for people using lower-limb prostheses because of residual limb volume fluctuation throughout the day. Releasing socket pressures during sitting (partial doffing) may help users increase their limb volume after they have undergone volume loss earlier in the day. The purpose of this research was to develop and evaluate a system to allow for quick and easy locking pin and socket panel release during sitting and relock upon standing. The system was to allow the partial doff tether length to be custom set for each user, accomplish release and relock in less than 2.0 s each, require only one hand, and require a finger push force comparable to a push button on a phone. A motor-driven release/relock system (<240 g build weight) housed within the socket adjusts locking pin tether length, and an instrumented ratcheting dial adjusts socket panel position. Three participants with a trans-tibial amputation operated the system properly using one hand. For a partial doff, users preferred a tether length between 5 and 6 cm. All users executed release within 1.5 s and relock within 1.5 s.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1350-4533
1873-4030
DOI:10.1016/j.medengphy.2021.03.002