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Lookup NU author(s): Dr Jennifer OlsenORCiD, Dr Matthew DysonORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2022 Canadian Online Publication Group. All Rights Reserved.BACKGROUND: Existing trans-radial prosthetic socket designs are not optimised to facilitate reliable myoelectric control. Many socket designs pre-date the introduction of myoelectric devices. However, socket designs featuring improved biomechanical stability, notably longitudinal compression sockets, have emerged in more recent years. Neither the subsequent effects, if any, of stabilising the limb on myoelectric control nor in which arrangement to apply the compression have been reported. METHODOLOGY: Twelve able-bodied participants completed two tasks whilst wearing a longitudinal compression socket simulator in three different configurations: 1) compressed, where the compression strut was placed on top of the muscle of interest, 2) relief, where the compression struts were placed either side of the muscle being recorded and 3) uncompressed, with no external compression. The tasks were 1) a single-channel myoelectric target tracking exercise, followed by 2), a high-intensity grasping task. The wearers' accuracy during the tracking task, the pressure at opposing sides of the simulator during contractions and the rate at which the limb fatigued were observed. FINDINGS: No significant difference between the tracking-task accuracy scores or rate of fatigue was observed for the different compression configurations. Pressure recordings from the compressed configuration showed that pressure was maintained at opposing sides of the simulator during muscle contractions. CONCLUSION: Longitudinal compression does not inhibit single-channel EMG control, nor improve fatigue performance. Longitudinal compression sockets have the potential to improve the reliability of multi-channel EMG control due to the maintenance of pressure during muscle contractions.
Author(s): Olsen J, Day S, Dupan S, Nazarpour K, Dyson M
Publication type: Article
Publication status: Published
Journal: Canadian Prosthetics and Orthotics Journal
Year: 2022
Volume: 5
Issue: 2
Online publication date: 20/07/2022
Acceptance date: 02/04/2018
Date deposited: 16/06/2023
ISSN (electronic): 2561-987X
Publisher: Canadian Online Publication Group
URL: https://doi.org/10.33137/cpoj.v5i2.37963
DOI: 10.33137/cpoj.v5i2.37963
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