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Permanent link (DOI): https://doi.org/10.7939/R37T3F

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Sit-to-Stand Biomechanics and the Design of an Assistive Knee-Ankle- Foot-Orthosis Open Access

Descriptions

Other title
Subject/Keyword
biomechanics
engineering
KAFO
sit-to-stand
orthotics
knee-ankle-foot-orthosis
rehabilitaion
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Schofield, Jonathon S
Supervisor and department
Adeeb, Samer (Civil/Structural Engineering)
Examining committee member and department
Carey, Jason (Mechanical Engineering)
Parent, Eric (Department of Physical Therapy)
Marwan, El-Rich (Civil/Structural Engineering)
Department
Department of Civil and Environmental Engineering
Specialization
Structural Engineering
Date accepted
2012-12-14T13:57:34Z
Graduation date
2013-06
Degree
Master of Science
Degree level
Master's
Abstract
Sit-to-stand (STS) transfer is a prerequisite for many daily tasks. Literature often assumes symmetrical behavior across the body (bilateral symmetry) during healthy STS. However; little research has been conducted to validate this assumption. Motion analysis was utilized to evaluate STS in 10 healthy males. Asymmetry was found in the peak joint moments (JM) and ground reaction forces. Asymmetry was also characterized over the whole STS movement. This analysis suggested evaluating peak values alone may not fully represent asymmetry present during this movement. A knee-ankle-foot-orthosis (KAFO) augments weight bearing in populations with lower extremity weakness by holding the knee extended and ankle neutral. However, this creates complications for users performing STS. A novel KAFO attachment was designed to generate a knee extension moment, thus alleviating these challenges. Testing on an able bodied participant and a finite element analysis indicate the design has the potential to assist KAFO users.
Language
English
DOI
doi:10.7939/R37T3F
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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