Dynamic 3D FE modelling of the human temporomandibular joint during whiplash
Dynamic 3D FE modelling of the human temporomandibular joint during whiplash
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DOI：
10.1016/j.medengphy.2007.07.009
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发表时间：
2008-07-01
影响因子：
2.2
通讯作者：
Doblare, M.
中科院分区：
文献类型：
--
作者：
del Palomar, A. Perez;Doblare, M.
追尾碰撞占车辆事故的三分之一以上，其中近40%的事故产生挥鞭样损伤。颈部挥鞭样损伤常被认为是颞下颌关节紊乱病（Temporomandibular Disorders，TMD）的重要危险因素，本研究旨在模拟颞下颌关节在两种类型的撞击（后部撞击和前部撞击）下的动态响应。为了了解作用在关节上的动态力，我们扩展了以前的人类颞下颌关节模型，并分析了在关节的软元件的应力分布，在后端碰撞，可以理解，下颌骨的惯性使其向后移动慢于头部，这导致了向下和向前位移的盘-髁状突复合体相对于颅底。因此，出现快速和大口张开。相反，在正面撞击时。由于上级上颌骨推动下颌骨一起移动，嘴巴几乎无法张开。关节的骨成分之间没有差异运动，因此关节的软组织不会受到高载荷。从这些结果来看，尽管进行的模拟存在局限性，我们可以得出结论，低速的后端撞击和正面撞击都不会对关节的软组织造成损伤。(C)2007年《消除对妇女一切形式歧视国际计划》。由爱思唯尔有限公司出版。保留所有权利。
Rear-end impacts account for more than one-third of vehicle accidents, and nearly 40% of these accidents produce whiplash injuries. Whiplash injury to the neck has often been considered a significant risk factor for the development of temporomandibular disorders (TMD).The objective of this study was to simulate the dynamic response of the temporomandibular joint during two types of impacts: a rear end and a frontal impact. To understand the dynamic forces acting on the joint, we extended a previous human temporomandibular joint model and analyzed the stress distributions in the soft elements of the joint.In the rear-end impact, it could be appreciated that the inertia of the mandible caused it to move posteriorly slower than the head, and this resulted in downward and forward displacements of the disc-condyle complex relative to the cranial base. Consequently, a rapid and big mouth opening occurs. In contrast, during the frontal impact. the mouth hardly opened, because the superior maxilla pushed the mandible to move together. There was not differential movement between bony components of the joint and therefore the soft tissues of the joint were not subjected to high loads.From these results, and despite the limitations of the simulations performed, we could conclude that neither a rear-end impact at low-velocity nor a frontal impact would produce damage to the soft tissues of the joint. (C) 2007 IPEM. Published by Elsevier Ltd. All rights reserved.