Biomechanical features of level walking by transtibial amputees wearing prosthetic feet with and without adaptive ankles

This study aimed to evaluate the kinematics and kinetics of the lower limb in both the intact and amputated leg in individuals with transtibial amputations wearing Energy storage and return feet (ESRFs) with fixed ankles and Prosthetic feet with adaptive ankles (PFAAs) during level walking. Three in...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2016, 30(6), , pp.2907-2914
Main Authors: Ko, Chang-Yong, Kim, Sol-Bi, Kim, Jong Kwon, Chang, Yunhee, Cho, Hyeonseok, Kim, Shinki, Ryu, Jeicheong, Mun, Museong
Format: Article
Language:English
Subjects:
Amputation
Biomechanics
Braking
Control
Dynamical Systems
Energy storage
Engineering
Feet
Grounds
Hydraulics
Industrial and Production Engineering
Kinematics
Legs
Mechanical Engineering
Prostheses
Prosthetics
Stiffness
Vibration
Walking
기계공학
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Summary:This study aimed to evaluate the kinematics and kinetics of the lower limb in both the intact and amputated leg in individuals with transtibial amputations wearing Energy storage and return feet (ESRFs) with fixed ankles and Prosthetic feet with adaptive ankles (PFAAs) during level walking. Three individuals with transtibial amputations walked on level ground wearing their own ESRFs and PFAAs. Spatiotemporal parameters, kinematics, and kinetics of the lower-extremity joints were measured in the amputated and intact legs. There were differences in the kinematics of the joints in the amputated leg and of the ankle in the intact leg between ESRFs and PFAAs. Differences in joint moments, power, and stiffness in most joints in both legs and braking impulse were found between ESRFs and PFAAs. Thus, although it was a pilot study with three subjects, ankle angle control mechanisms (ESRFs: Fixed ankle vs. propriofoot: Mechanical motor vs. élan and echelon: Hydraulic actuator) might affect biomechanical features during level walking.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-016-0550-6