Electromyographically controlled prosthetic wrist improves dexterity and reduces compensatory movements without added cognitive load.

Autor: Olsen CD; Department of Electrical Engineering, University of Utah, Salt Lake City, USA. connor.olsen@utah.edu., Olsen NR; Department of Mechanical Engineering, University of Utah, Salt Lake City, USA., Stone ES; Department of Biomedical Engineering, University of Utah, Salt Lake City, USA., Tully TN; Department of Biomedical Engineering, University of Utah, Salt Lake City, USA., Paskett MD; Department of Biomedical Engineering, University of Utah, Salt Lake City, USA., Teramoto M; Department of Physical Medicine and Rehabilitation, University of Utah, Salt Lake City, USA., Clark GA; Department of Biomedical Engineering, University of Utah, Salt Lake City, USA., George JA; Department of Electrical Engineering, University of Utah, Salt Lake City, USA.; Department of Mechanical Engineering, University of Utah, Salt Lake City, USA.; Department of Biomedical Engineering, University of Utah, Salt Lake City, USA.; Department of Physical Medicine and Rehabilitation, University of Utah, Salt Lake City, USA.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Oct 06; Vol. 14 (1), pp. 23248. Date of Electronic Publication: 2024 Oct 06.
DOI: 10.1038/s41598-024-73855-1
Abstrakt: Wrist function is a top priority for transradial amputees. However, the combined functional, biomechanical, and cognitive impact of using a powered prosthetic wrist is unclear. Here, we quantify task performance, compensatory movements, and cognitive load while three transradial amputees performed a modified Clothespin Relocation Task using two myoelectric prostheses with and without the wrists. The two myoelectric prostheses include a commercial prosthesis with a built-in powered wrist, and a newly developed inexpensive prosthetic wrist for research purposes, called the "Utah wrist", that can be adapted to work with various sockets and prostheses. For these three participants, task failure rate decreased significantly from 66% ± 12% without the wrist to 39% ± 9% with the Utah wrist. Compensatory forward leaning movements also decreased significantly, from 24.2° ± 2.5 without the wrist to 12.6° ± 1.0 with the Utah wrist, and from 23.6° ± 7.6 to 15.3° ± 7.2 with the commercial prosthesis with an integrated wrist. Compensatory leftward bending movements also significantly decreased, from 20.8° ± 8.6 to 12.3° ± 5.3, for the commercial with an integrated wrist. Importantly, simultaneous myoelectric control of either prosthetic wrist had no significant impact on cognitive load, as assessed by the NASA Task Load Index survey and a secondary detection response task. This work suggests that functional prosthetic wrists can improve dexterity and reduce compensation without significantly increasing cognitive effort. These results, and the introduction of a new inexpensive prosthetic wrist for research purposes, can aid future research and development and guide the prescription of upper-limb prostheses.
(© 2024. The Author(s).)
Databáze: MEDLINE
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