A mechatronic system for achieving optimum alignment of lower limb prosthesis

Misalignment in the lower limb prosthesis can cause great discomfort in the stumpsocket interface and disturbance to gait function. In the long run, it could deteriorate the musculoskeletal system. In practice, the assessment still depends heavily on the verbal feedback of an amputee and experien...

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Main Author:	Tee, Kian Sek
Format:	Thesis
Language:	English
Published:	2011
Subjects:	TJ Mechanical engineering and machinery TJ163.13-163.25 Power resources
Online Access:	http://eprints.uthm.edu.my/3092/1/24p%20TEE%20KIAN%20SEK.pdf
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id	my-uthm-ep.3092
record_format	uketd_dc
spelling	my-uthm-ep.30922021-11-02T01:55:30Z A mechatronic system for achieving optimum alignment of lower limb prosthesis 2011-11 Tee, Kian Sek TJ Mechanical engineering and machinery TJ163.13-163.25 Power resources Misalignment in the lower limb prosthesis can cause great discomfort in the stumpsocket interface and disturbance to gait function. In the long run, it could deteriorate the musculoskeletal system. In practice, the assessment still depends heavily on the verbal feedback of an amputee and experiences of a prosthetist. Moreover it is inconsistent amongst the prosthetists. Prosthetic alignment involves the adjustment of the prosthetic components relative to the gait quality. Some methods were proposed, including symmetry index, variation in a step-to-step transition, stability within the zone of integrated balance, matching roll-over shape (ROS) to an ideal ROS and etc. It is not clear if the optimum alignment could be achieved. These methods exhibit a few limitations, i.e. limited use of gait variables in a single comparison and non-uniform results when different gait variables are applied. There is a need to provide an objective assessment method that processes high dimensional gait variables and presents them in a simple form. In addition, it could be impractical and expensive clinically to spend excessive time on a patient. An ambulatory gait measurement system could achieve this objective to a certain extent. This research investigates a potential engineering solution that is able to provide an assistive and objective assessment of the lower limb prosthetic alignment that provides optimal gait quality. The effort includes a development of a low-cost ambulatory gait measurement system which could be reliably used during indoor and outdoor trials. Human walking trials using the designed ambulatory system are designed and performed to justify the proposed solution. A novel gait analysis method using Principle Component Analysis and Self-Organizing Feature Map is proposed to process high dimensional gait data into a simple plot and a decision guide. The proposed methodology could help to collect sufficient gait data during indoor and outdoor gaits and could provide an objective gait assessment during the application of lower limb prosthetic alignments. 2011-11 Thesis http://eprints.uthm.edu.my/3092/ http://eprints.uthm.edu.my/3092/1/24p%20TEE%20KIAN%20SEK.pdf text en public phd doctoral University of Leeds School of Mechanical Engineering
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English
topic	TJ Mechanical engineering and machinery TJ163.13-163.25 Power resources
spellingShingle	TJ Mechanical engineering and machinery TJ163.13-163.25 Power resources Tee, Kian Sek A mechatronic system for achieving optimum alignment of lower limb prosthesis
description	Misalignment in the lower limb prosthesis can cause great discomfort in the stumpsocket interface and disturbance to gait function. In the long run, it could deteriorate the musculoskeletal system. In practice, the assessment still depends heavily on the verbal feedback of an amputee and experiences of a prosthetist. Moreover it is inconsistent amongst the prosthetists. Prosthetic alignment involves the adjustment of the prosthetic components relative to the gait quality. Some methods were proposed, including symmetry index, variation in a step-to-step transition, stability within the zone of integrated balance, matching roll-over shape (ROS) to an ideal ROS and etc. It is not clear if the optimum alignment could be achieved. These methods exhibit a few limitations, i.e. limited use of gait variables in a single comparison and non-uniform results when different gait variables are applied. There is a need to provide an objective assessment method that processes high dimensional gait variables and presents them in a simple form. In addition, it could be impractical and expensive clinically to spend excessive time on a patient. An ambulatory gait measurement system could achieve this objective to a certain extent. This research investigates a potential engineering solution that is able to provide an assistive and objective assessment of the lower limb prosthetic alignment that provides optimal gait quality. The effort includes a development of a low-cost ambulatory gait measurement system which could be reliably used during indoor and outdoor trials. Human walking trials using the designed ambulatory system are designed and performed to justify the proposed solution. A novel gait analysis method using Principle Component Analysis and Self-Organizing Feature Map is proposed to process high dimensional gait data into a simple plot and a decision guide. The proposed methodology could help to collect sufficient gait data during indoor and outdoor gaits and could provide an objective gait assessment during the application of lower limb prosthetic alignments.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Tee, Kian Sek
author_facet	Tee, Kian Sek
author_sort	Tee, Kian Sek
title	A mechatronic system for achieving optimum alignment of lower limb prosthesis
title_short	A mechatronic system for achieving optimum alignment of lower limb prosthesis
title_full	A mechatronic system for achieving optimum alignment of lower limb prosthesis
title_fullStr	A mechatronic system for achieving optimum alignment of lower limb prosthesis
title_full_unstemmed	A mechatronic system for achieving optimum alignment of lower limb prosthesis
title_sort	mechatronic system for achieving optimum alignment of lower limb prosthesis
granting_institution	University of Leeds
granting_department	School of Mechanical Engineering
publishDate	2011
url	http://eprints.uthm.edu.my/3092/1/24p%20TEE%20KIAN%20SEK.pdf
_version_	1747831017492709376

A mechatronic system for achieving optimum alignment of lower limb prosthesis

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