Journal
PROSTHETICS AND ORTHOTICS INTERNATIONAL
Volume 39, Issue 2, Pages 166-173Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0309364613516484
Keywords
Electromyography; surface electromyography; sensor integration; patient comfort
Categories
Funding
- National Science Foundation [0931820, 1149385]
- United States Department of Defense [W81XWH-09-2-0020]
- National Institutes of Health [RHD064968A]
- National Institute on Disability and Rehabilitation Research [H133G120165]
- Div Of Information & Intelligent Systems
- Direct For Computer & Info Scie & Enginr [1149385] Funding Source: National Science Foundation
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Background and aim: In recent years, there has been an increased interest in recording high-quality electromyographic signals from within the sockets of lower-limb amputees. However, successful recording presents major challenges to both researchers and clinicians. This article details and compares four prototypical integrated socket-sensor designs used to record electromyographic signals from within the sockets of transfemoral amputees. Technique: Four prototypical socket-sensor configurations were constructed and tested on a single transfemoral amputee asked to perform sitting/standing, stair ascent/descent, and level ground walking. The number of large-amplitude motion artifacts generated using each prototype was quantified, the amount of skin irritation documented, and the comfort level of each assembly subjectively assessed by the amputee subject. Discussion: Of the four configurations tested, the combination of a suction socket with integrated wireless surface electrodes generated the lowest number of large-amplitude motion artifacts, the least visible skin irritation, and was judged to be most comfortable by the amputee subject. Clinical relevance The collection of high-quality electromyographic signals from an amputee's residual limb while maximizing patient comfort holds substantial potential to enhance neuromuscular clinical assessment and as a method of intuitive control of powered lower-limb prostheses.
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