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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-04-01
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| Series: | Frontiers in Bioengineering and Biotechnology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fbioe.2023.1141390/full |
| _version_ | 1797847160371281920 |
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| author | Wentao Chen Jisi Tang Wenxuan Shen Qing Zhou |
| author_facet | Wentao Chen Jisi Tang Wenxuan Shen Qing Zhou |
| author_sort | Wentao Chen |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-09T18:06:46Z |
| format | Article |
| id | doaj.art-64be8f543b8849c6a98099d3f87ed268 |
| institution | Directory Open Access Journal |
| issn | 2296-4185 |
| language | English |
| last_indexed | 2024-04-09T18:06:46Z |
| publishDate | 2023-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Bioengineering and Biotechnology |
| spelling | doaj.art-64be8f543b8849c6a98099d3f87ed2682023-04-14T05:40:52ZengFrontiers Media S.A.Frontiers in Bioengineering and Biotechnology2296-41852023-04-011110.3389/fbioe.2023.11413901141390Influence of walking on knee ligament response in car-to-pedestrian collisionsWentao ChenJisi TangWenxuan ShenQing ZhouPedestrians 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.https://www.frontiersin.org/articles/10.3389/fbioe.2023.1141390/fullcar-to-pedestrian collisionsknee ligamentsligament propertieswalking effectsmaterial uncertainty |
| spellingShingle | Wentao Chen Jisi Tang Wenxuan Shen Qing Zhou Influence of walking on knee ligament response in car-to-pedestrian collisions Frontiers in Bioengineering and Biotechnology car-to-pedestrian collisions knee ligaments ligament properties walking effects material uncertainty |
| 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 | car-to-pedestrian collisions knee ligaments ligament properties walking effects material uncertainty |
| url | https://www.frontiersin.org/articles/10.3389/fbioe.2023.1141390/full |
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