Cargando…
The Head AIS 4+ Injury Thresholds for the Elderly Vulnerable Road User Based on Detailed Accident Reconstructions
Compared with the young, the elderly (age greater than or equal to 60 years old) vulnerable road users (VRUs) face a greater risk of injury or death in a traffic accident. A contributing vulnerability is the aging processes that affect their brain structure. The purpose of this study was to investig...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8261157/ https://www.ncbi.nlm.nih.gov/pubmed/34249884 http://dx.doi.org/10.3389/fbioe.2021.682015 |
_version_ | 1783718956835536896 |
---|---|
author | Wu, He Han, Yong Pan, Di Wang, Bingyu Huang, Hongwu Mizuno, Koji Thomson, Robert |
author_facet | Wu, He Han, Yong Pan, Di Wang, Bingyu Huang, Hongwu Mizuno, Koji Thomson, Robert |
author_sort | Wu, He |
collection | PubMed |
description | Compared with the young, the elderly (age greater than or equal to 60 years old) vulnerable road users (VRUs) face a greater risk of injury or death in a traffic accident. A contributing vulnerability is the aging processes that affect their brain structure. The purpose of this study was to investigate the injury mechanisms and establish head AIS 4+ injury tolerances for the elderly VRUs based on various head injury criteria. A total of 30 elderly VRUs accidents with detailed injury records and video information were selected and the VRUs’ kinematics and head injuries were reconstructed by combining a multi-body system model (PC-Crash and MADYMO) and the THUMS (Ver. 4.0.2) FE models. Four head kinematic-based injury predictors (linear acceleration, angular velocity, angular acceleration, and head injury criteria) and three brain tissue injury criteria (coup pressure, maximum principal strain, and cumulative strain damage measure) were studied. The correlation between injury predictors and injury risk was developed using logistical regression models for each criterion. The results show that the calculated thresholds for head injury for the kinematic criteria were lower than those reported in previous literature studies. For the brain tissue level criteria, the thresholds calculated in this study were generally similar to those of previous studies except for the coup pressure. The models had higher (>0.8) area under curve values for receiver operator characteristics, indicating good predictive power. This study could provide additional support for understanding brain injury thresholds in elderly people. |
format | Online Article Text |
id | pubmed-8261157 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-82611572021-07-08 The Head AIS 4+ Injury Thresholds for the Elderly Vulnerable Road User Based on Detailed Accident Reconstructions Wu, He Han, Yong Pan, Di Wang, Bingyu Huang, Hongwu Mizuno, Koji Thomson, Robert Front Bioeng Biotechnol Bioengineering and Biotechnology Compared with the young, the elderly (age greater than or equal to 60 years old) vulnerable road users (VRUs) face a greater risk of injury or death in a traffic accident. A contributing vulnerability is the aging processes that affect their brain structure. The purpose of this study was to investigate the injury mechanisms and establish head AIS 4+ injury tolerances for the elderly VRUs based on various head injury criteria. A total of 30 elderly VRUs accidents with detailed injury records and video information were selected and the VRUs’ kinematics and head injuries were reconstructed by combining a multi-body system model (PC-Crash and MADYMO) and the THUMS (Ver. 4.0.2) FE models. Four head kinematic-based injury predictors (linear acceleration, angular velocity, angular acceleration, and head injury criteria) and three brain tissue injury criteria (coup pressure, maximum principal strain, and cumulative strain damage measure) were studied. The correlation between injury predictors and injury risk was developed using logistical regression models for each criterion. The results show that the calculated thresholds for head injury for the kinematic criteria were lower than those reported in previous literature studies. For the brain tissue level criteria, the thresholds calculated in this study were generally similar to those of previous studies except for the coup pressure. The models had higher (>0.8) area under curve values for receiver operator characteristics, indicating good predictive power. This study could provide additional support for understanding brain injury thresholds in elderly people. Frontiers Media S.A. 2021-06-23 /pmc/articles/PMC8261157/ /pubmed/34249884 http://dx.doi.org/10.3389/fbioe.2021.682015 Text en Copyright © 2021 Wu, Han, Pan, Wang, Huang, Mizuno and Thomson. 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 Wu, He Han, Yong Pan, Di Wang, Bingyu Huang, Hongwu Mizuno, Koji Thomson, Robert The Head AIS 4+ Injury Thresholds for the Elderly Vulnerable Road User Based on Detailed Accident Reconstructions |
title | The Head AIS 4+ Injury Thresholds for the Elderly Vulnerable Road User Based on Detailed Accident Reconstructions |
title_full | The Head AIS 4+ Injury Thresholds for the Elderly Vulnerable Road User Based on Detailed Accident Reconstructions |
title_fullStr | The Head AIS 4+ Injury Thresholds for the Elderly Vulnerable Road User Based on Detailed Accident Reconstructions |
title_full_unstemmed | The Head AIS 4+ Injury Thresholds for the Elderly Vulnerable Road User Based on Detailed Accident Reconstructions |
title_short | The Head AIS 4+ Injury Thresholds for the Elderly Vulnerable Road User Based on Detailed Accident Reconstructions |
title_sort | head ais 4+ injury thresholds for the elderly vulnerable road user based on detailed accident reconstructions |
topic | Bioengineering and Biotechnology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8261157/ https://www.ncbi.nlm.nih.gov/pubmed/34249884 http://dx.doi.org/10.3389/fbioe.2021.682015 |
work_keys_str_mv | AT wuhe theheadais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT hanyong theheadais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT pandi theheadais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT wangbingyu theheadais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT huanghongwu theheadais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT mizunokoji theheadais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT thomsonrobert theheadais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT wuhe headais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT hanyong headais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT pandi headais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT wangbingyu headais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT huanghongwu headais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT mizunokoji headais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions AT thomsonrobert headais4injurythresholdsfortheelderlyvulnerableroaduserbasedondetailedaccidentreconstructions |