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Influence of walking on knee ligament response in car-to-pedestrian collisions
Pedestrians are likely to experience walking before accidents. The walking process imposes cyclic loading on knee ligaments and increases knee joint temperature. Both cyclic loading and temperature affect the material properties of ligaments, which further influence the risk of ligament injury. Howe...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10140625/ https://www.ncbi.nlm.nih.gov/pubmed/37122854 http://dx.doi.org/10.3389/fbioe.2023.1141390 |
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author | Chen, Wentao Tang, Jisi Shen, Wenxuan Zhou, Qing |
author_facet | Chen, Wentao Tang, Jisi Shen, Wenxuan Zhou, Qing |
author_sort | Chen, Wentao |
collection | PubMed |
description | Pedestrians are likely to experience walking before accidents. The walking process imposes cyclic loading on knee ligaments and increases knee joint temperature. Both cyclic loading and temperature affect the material properties of ligaments, which further influence the risk of ligament injury. However, the effect of such walking-induced material property changes on pedestrian ligament response has not been considered. Therefore, in this study, we investigated the influence of walking on ligament response in car-to-pedestrian collisions. Using Total Human Model for Safety (THUMS) model, knee ligament responses (i.e., cross-sectional force and local strain) were evaluated under several crash scenarios (i.e., two impact speeds, two knee contact heights, and three pedestrian postures). In worst case scenarios, walking-induced changes in ligament material properties led to a 10% difference in maximum local strain and a 6% difference in maximum cross-sectional force. Further considering the material uncertainty caused by experimental dispersion, the ligament material property changes due to walking resulted in a 28% difference in maximum local strain and a 26% difference in maximum cross-sectional force. This study demonstrates the importance of accounting for walking-induced material property changes for the reliability of safety assessments and injury analysis. |
format | Online Article Text |
id | pubmed-10140625 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-101406252023-04-29 Influence of walking on knee ligament response in car-to-pedestrian collisions Chen, Wentao Tang, Jisi Shen, Wenxuan Zhou, Qing Front Bioeng Biotechnol Bioengineering and Biotechnology Pedestrians are likely to experience walking before accidents. The walking process imposes cyclic loading on knee ligaments and increases knee joint temperature. Both cyclic loading and temperature affect the material properties of ligaments, which further influence the risk of ligament injury. However, the effect of such walking-induced material property changes on pedestrian ligament response has not been considered. Therefore, in this study, we investigated the influence of walking on ligament response in car-to-pedestrian collisions. Using Total Human Model for Safety (THUMS) model, knee ligament responses (i.e., cross-sectional force and local strain) were evaluated under several crash scenarios (i.e., two impact speeds, two knee contact heights, and three pedestrian postures). In worst case scenarios, walking-induced changes in ligament material properties led to a 10% difference in maximum local strain and a 6% difference in maximum cross-sectional force. Further considering the material uncertainty caused by experimental dispersion, the ligament material property changes due to walking resulted in a 28% difference in maximum local strain and a 26% difference in maximum cross-sectional force. This study demonstrates the importance of accounting for walking-induced material property changes for the reliability of safety assessments and injury analysis. Frontiers Media S.A. 2023-04-13 /pmc/articles/PMC10140625/ /pubmed/37122854 http://dx.doi.org/10.3389/fbioe.2023.1141390 Text en Copyright © 2023 Chen, Tang, Shen and Zhou. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Bioengineering and Biotechnology Chen, Wentao Tang, Jisi Shen, Wenxuan Zhou, Qing Influence of walking on knee ligament response in car-to-pedestrian collisions |
title | Influence of walking on knee ligament response in car-to-pedestrian collisions |
title_full | Influence of walking on knee ligament response in car-to-pedestrian collisions |
title_fullStr | Influence of walking on knee ligament response in car-to-pedestrian collisions |
title_full_unstemmed | Influence of walking on knee ligament response in car-to-pedestrian collisions |
title_short | Influence of walking on knee ligament response in car-to-pedestrian collisions |
title_sort | influence of walking on knee ligament response in car-to-pedestrian collisions |
topic | Bioengineering and Biotechnology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10140625/ https://www.ncbi.nlm.nih.gov/pubmed/37122854 http://dx.doi.org/10.3389/fbioe.2023.1141390 |
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