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Evaluation of Limb Load Asymmetry Using Two New Mathematical Models
Quantitative measurement of limb loading is important in orthopedic and neurological rehabilitation. In current practice, mathematical models such as Symmetry index (SI), Symmetry ratio (SR), and Symmetry angle (SA) are used to quantify limb loading asymmetry. Literatures have identified certain lim...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Canadian Center of Science and Education
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4796372/ https://www.ncbi.nlm.nih.gov/pubmed/25716372 http://dx.doi.org/10.5539/gjhs.v7n2p1 |
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author | Kumar, Senthil NS Omar, Baharudin Joseph, Leonard H. Htwe, Ohnmar Jagannathan, K. Hamdan, Nor M Y Rajalakshmi, D. |
author_facet | Kumar, Senthil NS Omar, Baharudin Joseph, Leonard H. Htwe, Ohnmar Jagannathan, K. Hamdan, Nor M Y Rajalakshmi, D. |
author_sort | Kumar, Senthil NS |
collection | PubMed |
description | Quantitative measurement of limb loading is important in orthopedic and neurological rehabilitation. In current practice, mathematical models such as Symmetry index (SI), Symmetry ratio (SR), and Symmetry angle (SA) are used to quantify limb loading asymmetry. Literatures have identified certain limitations with the above mathematical models. Hence this study presents two new mathematical models Modified symmetry index (MSI) and Limb loading error (LLE) that would address these limitations. Furthermore, the current mathematical models were compared against the new model with the goal of achieving a better model. This study uses hypothetical data to simulate an algorithmic preliminary computational measure to perform with all numerical possibilities of even and uneven limb loading that can occur in human legs. Descriptive statistics are used to interpret the limb loading patterns: symmetry, asymmetry and maximum asymmetry. The five mathematical models were similar in analyzing symmetry between limbs. However, for asymmetry and maximum asymmetry data, the SA and SR values do not give any meaningful interpretation, and SI gives an inflated value. The MSI and LLE are direct, easy to interpret and identify the loading patterns with the side of asymmetry. The new models are notable as they quantify the amount and side of asymmetry under different loading patterns. |
format | Online Article Text |
id | pubmed-4796372 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Canadian Center of Science and Education |
record_format | MEDLINE/PubMed |
spelling | pubmed-47963722016-04-21 Evaluation of Limb Load Asymmetry Using Two New Mathematical Models Kumar, Senthil NS Omar, Baharudin Joseph, Leonard H. Htwe, Ohnmar Jagannathan, K. Hamdan, Nor M Y Rajalakshmi, D. Glob J Health Sci Articles Quantitative measurement of limb loading is important in orthopedic and neurological rehabilitation. In current practice, mathematical models such as Symmetry index (SI), Symmetry ratio (SR), and Symmetry angle (SA) are used to quantify limb loading asymmetry. Literatures have identified certain limitations with the above mathematical models. Hence this study presents two new mathematical models Modified symmetry index (MSI) and Limb loading error (LLE) that would address these limitations. Furthermore, the current mathematical models were compared against the new model with the goal of achieving a better model. This study uses hypothetical data to simulate an algorithmic preliminary computational measure to perform with all numerical possibilities of even and uneven limb loading that can occur in human legs. Descriptive statistics are used to interpret the limb loading patterns: symmetry, asymmetry and maximum asymmetry. The five mathematical models were similar in analyzing symmetry between limbs. However, for asymmetry and maximum asymmetry data, the SA and SR values do not give any meaningful interpretation, and SI gives an inflated value. The MSI and LLE are direct, easy to interpret and identify the loading patterns with the side of asymmetry. The new models are notable as they quantify the amount and side of asymmetry under different loading patterns. Canadian Center of Science and Education 2015-03 2014-09-25 /pmc/articles/PMC4796372/ /pubmed/25716372 http://dx.doi.org/10.5539/gjhs.v7n2p1 Text en Copyright: © Canadian Center of Science and Education http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Articles Kumar, Senthil NS Omar, Baharudin Joseph, Leonard H. Htwe, Ohnmar Jagannathan, K. Hamdan, Nor M Y Rajalakshmi, D. Evaluation of Limb Load Asymmetry Using Two New Mathematical Models |
title | Evaluation of Limb Load Asymmetry Using Two New Mathematical Models |
title_full | Evaluation of Limb Load Asymmetry Using Two New Mathematical Models |
title_fullStr | Evaluation of Limb Load Asymmetry Using Two New Mathematical Models |
title_full_unstemmed | Evaluation of Limb Load Asymmetry Using Two New Mathematical Models |
title_short | Evaluation of Limb Load Asymmetry Using Two New Mathematical Models |
title_sort | evaluation of limb load asymmetry using two new mathematical models |
topic | Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4796372/ https://www.ncbi.nlm.nih.gov/pubmed/25716372 http://dx.doi.org/10.5539/gjhs.v7n2p1 |
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