Eriksson Linda, Kullgren Anders
Autoliv Sverige AB, Vårgårda, Sweden; Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden.
Traffic Inj Prev. 2006 Mar;7(1):61-9. doi: 10.1080/15389580500413000.
Validated injury criteria are essential when developing restraints for AIS 1 neck injuries, which should protect occupants in a variety of crash situations. Such criteria have been proposed and attempts have been made to validate or disprove these. However, no criterion has yet been fully validated. The objective of this study is to evaluate the influence of seat geometry and seating posture on the NIC(max) long-term AIS 1 neck injury predictability by making parameter analyses on reconstructed real-life rear-end crashes with known injury outcomes.
Mathematical models of the BioRID II and three car seats were used to reconstruct 79 rear-end crashes involving 110 occupants with known injury outcomes. Correlations between the NIC(max) values and the duration of AIS 1 neck injuries were evaluated for variations in seat geometry and seating posture. Sensitivities, specificities, positive predictive values, and negative predictive values were also calculated to evaluate the NIC(max) predictability.
Correlations between the NIC(max) values and the duration of AIS 1 neck injuries were found and these relations were used to establish injury risk curves for variations in seat geometry and seating posture. Sensitivities, specificities, positive predictive values, and negative predictive values showed that the NIC(max) predicts long-term AIS 1 neck injuries also for variations in seat geometry and seating postures.
The NIC(max) can be used to predict long-term AIS 1 neck injuries.
在开发用于AIS 1级颈部损伤的约束系统时，经过验证的损伤标准至关重要，该约束系统应在各种碰撞情况下保护驾乘人员。已经提出了这样的标准，并已尝试对其进行验证或反驳。然而，尚无标准得到充分验证。本研究的目的是通过对已知损伤结果的真实生活中追尾碰撞事故进行参数分析，评估座椅几何形状和坐姿对NIC（max）长期AIS 1级颈部损伤预测性的影响。
使用BioRID II和三个汽车座椅的数学模型重建了79起涉及110名驾乘人员且已知损伤结果的追尾碰撞事故。针对座椅几何形状和坐姿的变化，评估了NIC（max）值与AIS 1级颈部损伤持续时间之间的相关性。还计算了敏感性、特异性、阳性预测值和阴性预测值，以评估NIC（max）的预测性。
发现NIC（max）值与AIS 1级颈部损伤持续时间之间存在相关性，并利用这些关系建立了座椅几何形状和坐姿变化的损伤风险曲线。敏感性、特异性、阳性预测值和阴性预测值表明，NIC（max）也能预测座椅几何形状和坐姿变化时的长期AIS 1级颈部损伤。
NIC（max）可用于预测长期AIS 1级颈部损伤。
