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Biomechanic and Energetic Effects of a Quasi-Passive Artificial Gastrocnemius on Transtibial Amputee Gait
Joint Authors
Eilenberg, Michael F.
Herr, Hugh
Endo, Ken
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-03-01
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
State-of-the-art transtibial prostheses provide only ankle joint actuation and thus do not provide the biarticular function of the amputated gastrocnemius muscle.
We develop a prosthesis that actuates both knee and ankle joints and then evaluate the incremental effects of this prosthesis as compared to ankle actuation alone.
The prosthesis employs a quasi-passive clutched-spring knee orthosis, approximating the largely isometric behavior of the biological gastrocnemius, and utilizes a commercial powered ankle-foot prosthesis for ankle joint functionality.
Two participants with unilateral transtibial amputation walk with this prosthesis on an instrumented treadmill, while motion, force, and metabolic data are collected.
Data are analyzed to determine differences between the biarticular condition with the activation of the knee orthosis and the monoarticular condition with the orthosis behaving as a free-joint.
As hypothesized, the biarticular system is shown to reduce both affected-side knee and hip moment impulse and positive mechanical work in both participants during the late stance knee flexion phase of walking, compared to the monoarticular condition.
The metabolic cost of walking is also reduced for both participants.
These very preliminary results suggest that biarticular functionality may provide benefits beyond even those of the most advanced monoarticular prostheses.
American Psychological Association (APA)
Eilenberg, Michael F.& Endo, Ken& Herr, Hugh. 2018. Biomechanic and Energetic Effects of a Quasi-Passive Artificial Gastrocnemius on Transtibial Amputee Gait. Journal of Robotics،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1197852
Modern Language Association (MLA)
Eilenberg, Michael F.…[et al.]. Biomechanic and Energetic Effects of a Quasi-Passive Artificial Gastrocnemius on Transtibial Amputee Gait. Journal of Robotics No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1197852
American Medical Association (AMA)
Eilenberg, Michael F.& Endo, Ken& Herr, Hugh. Biomechanic and Energetic Effects of a Quasi-Passive Artificial Gastrocnemius on Transtibial Amputee Gait. Journal of Robotics. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1197852
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1197852