Aix Marseille Univ, IFSTTAR, LBA, UMR_T 24, 13916 Marseille, France.
Aix-Marseille Univ, CNRS, EFS, ADES, Faculté de médecine Secteur Nord, Marseille, France; APHM, CHU Timone, Service de Médecine Légale et Droit de la santé, Marseille, France.
Forensic Sci Int. 2019 Sep;302:109891. doi: 10.1016/j.forsciint.2019.109891. Epub 2019 Jul 31.
The presence of fracture on neck elements is an indication of violence. Both the hyoid bone and the larynx can be damaged by a strangulation mechanism. Thyroid cartilage, more specifically, may present lesions in response to this mechanical stress. These lesions result in fractures at the bases of the horns of the thyroid cartilage. This study focuses on the thyroid cartilage behavior in cases of bi-digital strangulation, using an anthropometric and biomechanical approach. To develop a biomechanical model, we performed an anthropometric study taking into account 14 distances measurements as well as 3 measurements of angles. These measures allowed us to determine a significant sexual dimorphism between individuals. Then, we define 6 morphologies models, composed of 3 females and 3 males individuals. In order to visualize the ossification of the cartilage, each model has been tested with bone properties. Strangulation cases were simulated by applying an imposed velocity of 0.4m/s then 1m/s. We observed different behaviors of the thyroid cartilage according to the sex and the morphology.
颈部元素出现骨折表明存在暴力。舌骨和喉头都可能因勒颈机制而受损。甲状软骨，更具体地说，可能会因这种机械应力而出现损伤。这些损伤会导致甲状软骨角基部骨折。本研究采用人体测量学和生物力学方法，研究双指勒颈情况下的甲状软骨行为。为了开发生物力学模型，我们进行了人体测量学研究，考虑了 14 个距离测量值以及 3 个角度测量值。这些测量值使我们能够确定个体之间存在显著的性别二态性。然后，我们定义了 6 种形态模型，由 3 名女性和 3 名男性个体组成。为了可视化软骨的骨化，我们用骨骼属性对每个模型进行了测试。通过施加 0.4m/s 然后 1m/s 的速度来模拟勒颈情况。我们根据性别和形态观察到甲状软骨的不同行为。
