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The Micro Topology and Statistical Analysis of the Forces of Walking and Failure of an ITAP in a Femur

Euan Langford, Christian Griffiths, Andrew Rees, Josh Bird

Micromachines, Volume: 12, Issue: 3

Swansea University Authors: Christian Griffiths, Andrew Rees

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DOI (Published version): 10.3390/mi12030298

Abstract

This paper studies the forces acting upon the Intraosseous Transcutaneous Amputation Prosthesis, ITAP, that has been designed for use in a quarter amputated femur. To design in a failure feature, utilising a safety notch, which would stop excessive stress, σ, permeating the bone causing damage to th...

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Published in: Micromachines
ISSN: 2072-666X
Published: MDPI AG 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56438
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first_indexed 2021-03-12T14:30:11Z
last_indexed 2021-04-20T03:21:53Z
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spelling 2021-04-19T10:11:45.6322344 v2 56438 2021-03-12 The Micro Topology and Statistical Analysis of the Forces of Walking and Failure of an ITAP in a Femur 84c202c256a2950fbc52314df6ec4914 Christian Griffiths Christian Griffiths true false e43e88c74976e714e1d669a898f8470d Andrew Rees Andrew Rees true false 2021-03-12 GENG This paper studies the forces acting upon the Intraosseous Transcutaneous Amputation Prosthesis, ITAP, that has been designed for use in a quarter amputated femur. To design in a failure feature, utilising a safety notch, which would stop excessive stress, σ, permeating the bone causing damage to the user. To achieve this, the topology of the ITAP was studied using MATLAB and ANSYS models with a wide range of component volumes. The topology analysis identified critical materials and local maximum stresses when modelling the applied loads. This together with additive layer manufacture allows for bespoke prosthetics that can improve patient outcomes. Further research is needed to design a fully functional, failure feature that is operational when extreme loads are applied from any direction. Physical testing is needed for validation of this study. Further research is also recommended on the design so that the σ within the ITAP is less than the yield stress, σs, of bone when other loads are applied from running and other activities. Journal Article Micromachines 12 3 MDPI AG 2072-666X prostheses; ITAP; micro topology; ANSYS; MATLAB; additive manufacture 12 3 2021 2021-03-12 10.3390/mi12030298 COLLEGE NANME General Engineering COLLEGE CODE GENG Swansea University 2021-04-19T10:11:45.6322344 2021-03-12T14:28:13.6687583 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Euan Langford 1 Christian Griffiths 2 Andrew Rees 3 Josh Bird 4 56438__19483__e6e18844bb43459f97df22ce8ed87d68.pdf 56438.pdf 2021-03-12T14:29:53.9823712 Output 5248775 application/pdf Version of Record true Copyright: © 2021 by the authors. This article is an open access article distributed under the terms of the Creative Commons Attribution (CC BY) license true eng http://creativecommons.org/licenses/by/4.0/
title The Micro Topology and Statistical Analysis of the Forces of Walking and Failure of an ITAP in a Femur
spellingShingle The Micro Topology and Statistical Analysis of the Forces of Walking and Failure of an ITAP in a Femur
Christian Griffiths
Andrew Rees
title_short The Micro Topology and Statistical Analysis of the Forces of Walking and Failure of an ITAP in a Femur
title_full The Micro Topology and Statistical Analysis of the Forces of Walking and Failure of an ITAP in a Femur
title_fullStr The Micro Topology and Statistical Analysis of the Forces of Walking and Failure of an ITAP in a Femur
title_full_unstemmed The Micro Topology and Statistical Analysis of the Forces of Walking and Failure of an ITAP in a Femur
title_sort The Micro Topology and Statistical Analysis of the Forces of Walking and Failure of an ITAP in a Femur
author_id_str_mv 84c202c256a2950fbc52314df6ec4914
e43e88c74976e714e1d669a898f8470d
author_id_fullname_str_mv 84c202c256a2950fbc52314df6ec4914_***_Christian Griffiths
e43e88c74976e714e1d669a898f8470d_***_Andrew Rees
author Christian Griffiths
Andrew Rees
author2 Euan Langford
Christian Griffiths
Andrew Rees
Josh Bird
format Journal article
container_title Micromachines
container_volume 12
container_issue 3
publishDate 2021
institution Swansea University
issn 2072-666X
doi_str_mv 10.3390/mi12030298
publisher MDPI AG
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
active_str 0
description This paper studies the forces acting upon the Intraosseous Transcutaneous Amputation Prosthesis, ITAP, that has been designed for use in a quarter amputated femur. To design in a failure feature, utilising a safety notch, which would stop excessive stress, σ, permeating the bone causing damage to the user. To achieve this, the topology of the ITAP was studied using MATLAB and ANSYS models with a wide range of component volumes. The topology analysis identified critical materials and local maximum stresses when modelling the applied loads. This together with additive layer manufacture allows for bespoke prosthetics that can improve patient outcomes. Further research is needed to design a fully functional, failure feature that is operational when extreme loads are applied from any direction. Physical testing is needed for validation of this study. Further research is also recommended on the design so that the σ within the ITAP is less than the yield stress, σs, of bone when other loads are applied from running and other activities.
published_date 2021-03-12T04:11:24Z
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score 10.997843

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