Highlights
- •Compensatory motions were compared for body-powered and myoelectric prosthesis users.
- •Differences in compensatory motions may occur due to prosthesis actuation method.
- •Compensatory motions were defined by altered range of motion of the intact joints.
- •Prosthesis type did not have a consistent effect on compensatory movements.
Abstract
Background
People with upper limb absence use compensatory movements to accommodate lack of motion
in the prosthetic hand. The purpose of this study was to determine if the type of
prosthesis used (i.e. body-powered or myoelectric) affects compensatory movements
during activities of daily living.
Methods
Twelve transradial body-powered and/or myoelectric prosthesis users performed up to
six unimanual and bimanual activities of daily living. Trunk range of motion and peak
upper limb angles for each task were compared between prostheses.
Findings
Compensatory movement generally did not differ based on prosthesis type. However,
body-powered users had increased trunk lateral lean compared to myoelectric users
during a deodorant application task (P = 0.025). Body-powered users also had increased trunk axial rotation (P = 0.048) and decreased shoulder elevation (P = 0.046) when transferring a box between shelves. Compensatory movements were not
systematically correlated with duration of prosthesis ownership, socket comfort, or
terminal device type.
Interpretation
A prosthesis user's compensatory movements may depend on other factors beyond whether
the prosthesis terminal device is actuated through body-powered or myoelectric mechanisms.
Further exploration of the factors that influence joint kinematics in prosthesis users
may inform future prosthesis prescription practices and help patients become successful
users.
Keywords
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Article Info
Publication History
Published online: June 27, 2022
Accepted:
June 24,
2022
Received:
April 15,
2022
Identification
Copyright
© 2022 Elsevier Ltd. All rights reserved.
