Östh Jonas, Brolin Karin, Svensson Mats Y, Linder Astrid
J Biomech Eng. 2016 Jun;138(6):061005. doi: 10.1115/1.4032966.
Mathematical cervical spine models allow for studying of impact loading that can cause whiplash associated disorders (WAD). However, existing models only cover the male anthropometry, despite the female population being at a higher risk of sustaining WAD in automotive rear-end impacts. The aim of this study is to develop and validate a ligamentous cervical spine intended for biomechanical research on the effect of automotive impacts. A female model has the potential to aid the design of better protection systems as well as improve understanding of injury mechanisms causing WAD. A finite element (FE) mesh was created from surface data of the cervical vertebrae of a 26-year old female (stature 167 cm, weight 59 kg). Soft tissues were generated from the skeletal geometry and anatomical literature descriptions. Ligaments were modeled with nonlinear elastic orthotropic membrane elements, intervertebral disks as composites of nonlinear elastic bulk elements, and orthotropic anulus fibrosus fiber layers, while cortical and trabecular bones were modeled as isotropic plastic-elastic. The model has geometrical features representative of the female cervical spine-the largest average difference compared with published anthropometric female data was the vertebral body depth being 3.4% shorter for the model. The majority the cervical segments compare well with respect to biomechanical data at physiological loads, with the best match for flexion-extension loads and less biofidelity for axial rotation. An average female FE ligamentous cervical spine model was developed and validated with respect to physiological loading. In flexion-extension simulations with the developed female model and an existing average male cervical spine model, a greater range of motion (ROM) was found in the female model.
数学颈椎模型有助于研究可能导致挥鞭样损伤相关疾病(WAD)的撞击负荷。然而,尽管女性人群在汽车追尾撞击中遭受WAD的风险更高,但现有模型仅涵盖男性人体测量数据。本研究的目的是开发并验证一种用于汽车撞击影响生物力学研究的韧带颈椎模型。女性模型有潜力帮助设计更好的保护系统,并增进对导致WAD的损伤机制的理解。从一名26岁女性(身高167厘米,体重59千克)的颈椎表面数据创建了有限元(FE)网格。软组织根据骨骼几何形状和解剖学文献描述生成。韧带采用非线性弹性正交各向异性膜单元建模,椎间盘采用非线性弹性体积单元和正交各向异性纤维环纤维层的复合材料建模,而皮质骨和小梁骨则采用各向同性弹塑性建模。该模型具有代表女性颈椎的几何特征——与已发表的女性人体测量数据相比,最大的平均差异是模型的椎体深度短3.4%。大多数颈椎节段在生理负荷下的生物力学数据比较吻合,屈伸负荷的匹配度最佳,轴向旋转的生物逼真度较低。开发了一个平均女性有限元韧带颈椎模型,并针对生理负荷进行了验证。在使用开发的女性模型和现有的平均男性颈椎模型进行的屈伸模拟中,发现女性模型的运动范围(ROM)更大。
Spine (Phila Pa 1976). 2004-2-15
J Mech Behav Biomed Mater. 2016-1
J Biomech. 2017-1-25
Comput Methods Programs Biomed. 2019-9-11
Proc Inst Mech Eng H. 2016-7
Med Biol Eng Comput. 2025-8-23
Med Biol Eng Comput. 2025-3
Med Biol Eng Comput. 2024-12
Int J Surg. 2025-1-1