Teo Ee Chon, Zhang Qing Hang, Huang Russel C
School of Mechanical and Aerospace Engineering, Biomedical Engineering Research Centre, College of Engineering, Nanyang Technological University, Singapore 639798, Singapore.
Med Eng Phys. 2007 Jan;29(1):54-60. doi: 10.1016/j.medengphy.2006.01.007. Epub 2006 Feb 28.
In this study, a detailed three-dimensional head-neck (C0-C7) finite element (FE) model developed previously based on the actual geometry of a human cadaver specimen was used. Five simulation analyses were performed to investigate the kinematic responses of the head-neck complex under rear-end, front, side, rear- and front-side impacts. Under rear-end and front impacts, it was predicted that the global and intervertebral rotations of the head-neck in the sagittal plane displayed nearly symmetric curvatures about the frontal plane. The primary sagittal rotational angles of the neck under direct front and rear-end impact conditions were higher than the primary frontal rotational angles under other side impact conditions. The analysis predicted early S-shaped and subsequent C-shaped curvatures of the head-neck complex in the sagittal plane under front and rear-end impact, and in the frontal plane under side impact. The head-neck complex flexed laterally in one direction with peak magnitude of larger than 22 degrees and a duration of about 130 ms before flexing in the opposite direction under both side and rear-side impact, compared to the corresponding values of about 15 degrees and 105 ms under front-side impact. The C0-C7 FE model has reasonably predicted the effects of impact direction in the primary sagittal and frontal segmental motion and curvatures of the head-neck complex under various impact conditions.
在本研究中，使用了先前基于人体尸体标本的实际几何形状开发的详细三维头颈部（C0-C7）有限元（FE）模型。进行了五次模拟分析，以研究头颈部复合体在追尾、正面、侧面、后侧面和前侧面撞击下的运动学响应。在追尾和正面撞击下，预计头颈部在矢状面内的整体和椎间旋转在额状面周围呈现出近乎对称的曲率。在直接正面和追尾撞击条件下，颈部的主要矢状旋转角度高于其他侧面撞击条件下的主要额状旋转角度。分析预测，在正面和追尾撞击下，头颈部复合体在矢状面内早期呈S形，随后呈C形弯曲；在侧面撞击下，在额状面内呈C形弯曲。与正面撞击下约15度和105毫秒的相应值相比，在侧面和后侧面撞击下，头颈部复合体在向相反方向弯曲之前，会在一个方向上横向弯曲，峰值幅度大于22度，持续时间约为130毫秒。C0-C7有限元模型合理地预测了在各种撞击条件下，撞击方向对头颈部复合体主要矢状和额状节段运动及曲率的影响。
