The Head AIS 4+ Injury Thresholds for the Elderly Vulnerable Road User Based on Detailed Accident Reconstructions.
The Head AIS 4+ Injury Thresholds for the Elderly Vulnerable Road User Based on Detailed Accident Reconstructions.
复制标题
基于详细事故重建的老年弱势道路使用者的 Head AIS 4 伤害阈值
DOI：
10.3389/fbioe.2021.682015
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发表时间：
2021
影响因子：
5.7
通讯作者：
Thomson R
中科院分区：
文献类型：
--
作者：
Wu H;Han Y;Pan D;Wang B;Huang H;Mizuno K;Thomson R
与年轻人相比，老年人（年龄大于或等于60岁）弱势道路使用者（VRU）在交通事故中面临更大的伤亡风险。一个造成脆弱性的因素是影响他们大脑结构的衰老过程。本研究的目的是调查损伤机制，并建立头部AIS 4+损伤的容忍度为基础的各种头部损伤标准的老年VRU。选取30例有详细伤情记录和视频信息的老年VRU事故，采用多体系统模型（PC-Crash和MADYMO）和THUMS（Ver. 4.0.2）有限元模型。研究了四种基于头部运动学的损伤预测因子（线加速度、角速度、角加速度和头部损伤标准）和三种脑组织损伤标准（冲击压力、最大主应变和累积应变损伤测量）。伤害预测和伤害风险之间的相关性是使用逻辑回归模型为每个标准。结果表明，计算出的阈值为头部受伤的运动学标准低于以往的文献研究报告。对于脑组织水平的标准，在这项研究中计算的阈值一般类似于以前的研究，除了政变压力。对于受试者操作者特征，模型具有更高（>0.8）的曲线下面积值，表明具有良好的预测能力。这项研究可以为理解老年人的脑损伤阈值提供额外的支持。
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.
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影响因子：
2.2
作者：
Darvish, KK;Crandall, JR
通讯作者：
Crandall, JR
影响因子：
1.9
作者：
Bourdet, N.;Deck, C.;Willinger, R.
通讯作者：
Willinger, R.
DOI：
10.1115/1.2798289
发表时间：
1997-11-01
影响因子：
1.7
作者：
Donnelly, BR;Medige, J
通讯作者：
Medige, J
DOI：
10.1115/1.1324667
发表时间：
2000-12-01
影响因子：
1.7
作者：
Bain, AC;Meaney, DF
通讯作者：
Meaney, DF
影响因子：
5.9
作者：
Badea-Romero, Alexandro;Lenard, James
通讯作者：
Lenard, James