Quantification of functional hand grip using electromyography and inertial sensor-derived accelerations: Clinical implications

Martin-Martin, Jaime & Cuesta-Vargas, Antonio I. (2014) Quantification of functional hand grip using electromyography and inertial sensor-derived accelerations: Clinical implications. BioMedical Engineering OnLine, 13(161).

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Abstract

Background

Assessing hand injury is of great interest given the level of involvement of the hand with the environment. Knowing different assessment systems and their limitations generates new perspectives. The integration of digital systems (accelerometry and electromyography) as a tool to supplement functional assessment allows the clinician to know more about the motor component and its relation to movement. Therefore, the purpose of this study was the kinematic and electromyography analysis during functional hand movements.

Method

Ten subjects carried out six functional movements (terminal pinch, termino-lateral pinch, tripod pinch, power grip, extension grip and ball grip). Muscle activity (hand and forearm) was measured in real time using electromyograms, acquired with the Mega ME 6000, whilst acceleration was measured using the AcceleGlove.

Results

Electrical activity and acceleration variables were recorded simultaneously during the carrying out of the functional movements. The acceleration outcome variables were the modular vectors of each finger of the hand and the palm. In the electromyography, the main variables were normalized by the mean and by the maximum muscle activity of the thenar region, hypothenar, first interosseous dorsal, wrist flexors, carpal flexors and wrist extensors.

Conclusions

Knowing muscle behavior allows the clinician to take a more direct approach in the treatment. Based on the results, the tripod grip shows greater kinetic activity and the middle finger is the most relevant in this regard. Ball grip involves most muscle activity, with the thenar region playing a fundamental role in hand activity.

Clinical relevance

Relating muscle activation, movements, individual load and displacement offers the possibility to proceed with rehabilitation by individual component.

Impact and interest:

1 citations in Scopus
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1 citations in Web of Science®

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ID Code: 84424
Item Type: Journal Article
Refereed: Yes
Keywords: Assessment, Kinematic, Signal, Electromyography, Functions
DOI: 10.1186/1475-925X-13-161
ISSN: 1475-925X
Divisions: Current > Schools > School of Clinical Sciences
Current > QUT Faculties and Divisions > Faculty of Health
Copyright Owner: Copyright 2014 Martin-Martin and Cuesta-Vargas
Copyright Statement: This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
Deposited On: 24 May 2015 23:46
Last Modified: 25 May 2015 22:52

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