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An artificial gastrocnemius for a transtibial prosthesis

Author(s)
Swart, E.; Endo, Ken; Herr, Hugh M.
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Abstract
A transtibial amputee does not have a functional gastrocnemius muscle, which affects the knee as well as the ankle joint. In this investigation, we developed a transtibial prosthesis comprising an artificial gastrocnemius mechanism as well as a powered ankle-foot device. A pilot study was conducted with a bilateral transtibial amputee walking at a self-selected speed. The trial compared muscle electromyography and metabolic cost data for the amputee while using the active gastrocnemius prosthesis and a conventional Flex-Foot prosthesis. The experimental data showed that the compensation for ankle-foot and gastrocnemius function offered by the active device resulted in a reduced metabolic cost for the amputee participant.
Date issued
2009-11
URI
http://hdl.handle.net/1721.1/52488
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Media Laboratory
Journal
2009 Engineering in Medicine and Biology Society
Publisher
Institute of Electrical and Electronics Engineers
Citation
Endo, K., E. Swart, and H. Herr. “An artificial gastrocnemius for a transtibial prosthesis.” Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE. 2009. 5034-5037. © 2009 IEEE
Version: Final published version
ISBN
978-1-4244-3296-7
ISSN
1557-170X

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