Chinese Journal of Contemporary Neurology and Neurosurgery ›› 2013, Vol. 13 ›› Issue (11): 924-930. doi: 10.3969/j.issn.1672-6731.2013.11.003

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Research on simulation calculation method of biomechanical characteristics of C1-3 motion segment damage mechanism

HUANG Ju-ying1, LI Hai-yun1, JIAN Feng-zeng2, XU Li-li1   

  1. 1 Computer Simulation and Medical Imaging Laboratory, College of Biomedical Engineering, Capital Medical University, Beijing 100069, China
    2 Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
  • Online:2013-11-25 Published:2013-11-19
  • Contact: XU Li-li (Email: phyally@ccmu.edu.cn)
  • Supported by:

    This study was supported by National Natural Science Foundation of China (No. 30670576, 81271519), Beijing Natural Science Foundation (No. 4122018) and Capital Medical University Natural Science Foundation (No. 2013ZR12).

颈椎上段C1 ~ 3损伤机制的生物力学特征仿真计算方法研究

黄菊英, 李海云, 菅凤增, 许莉莉   

  1. 100069 北京,首都医科大学生物医学工程学院计算机仿真和医学影像实验室(黄菊英,李海云,许莉莉);
    100053 北京,首都医科大学宣武医院神经外科(菅凤增)
  • 通讯作者: 许莉莉 (Email:phyally@ccmu.edu.cn)
  • 基金资助:

    国家自然科学基金资助项目(项目编号:30670576);国家自然科学基金资助项目(项目编号:81271519);北京市自然科学基金资助项目(项目编号:4122018);首都医科大学自然科学基金资助项目(项目编号:2013ZR12)

Abstract: Objective  To develop the finite element model (FEM) of cervical spinal C1-3 motion segment, and to make biomechanical finite element analysis (FEA) on C1-3 motion segment and thus simulate the biomechanical characteristics of C1-3 motion segment in distraction violence, compression violence, hyperextension violence and hyperflexion violence.  Methods  According to CT radiological data of a healthy adult, the vertebrae and intervertebral discs of cervical spinal C1-3 motion segment were respectively reconstructed by Mimics 10.01 software and Geomagic 10.0 software. The FEM of C1-3 motion segment was reconstructed by attaching the corresponding material properties of cervical spine in Ansys software. The biomechanical characteristics of cervical spinal C1-3 motion segment model were simulated under the 4 loadings of distraction violence, compression violence, hyperextension violence and hyperflexion violence by finite element method.  Results  In the loading of longitudinal stretch, the stress was relatively concentrated in the anterior arch of atlas, atlantoaxial joint and C3 lamina and spinous process. In the longitudinal compressive loads, the maximum stress of the upper cervical spine was located in the anterior arch of atlas. In the loading of hyperextension moment, the stress was larger in the massa lateralis atlantis, the lateral and posterior arch junction of atlas, the posterior arch nodules of the atlas, superior articular surface of axis and C2 isthmus. In the loading of hyperflexion moment, the stress was relatively concentrated in the odontoid process of axis, the posterior arch of atlas, the posterior arch nodules of atlas, C2 isthmic and C2 inferior articular process.  Conclusion  Finite element biomechanical testing of C1-3 motion segment can predict the biomechanical mechanism of upper cervical spine injury.

Key words: Cervical vertebrae, Neck injuries, Biomechanics, Finite element analysis, Stress (not in MeSH)

摘要: 目的 建立人体C1~3 运动节段有限元模型,对C1~3 运动节段进行生物力学有限元测试,模拟在牵张、压缩、过伸和过屈暴力时1~3 运动节段生物力学特征。方法 采集健康成人C1~3 运动节段CT影像学资料,Mimics 10.01医学图像处理软件和Geomagic 10.0逆向工程软件分别建立C1~3运动节段椎骨和椎间盘,Ansys 软件附加颈椎相关材料属性,建立C1~3 运动节段有限元模型,模拟C1~3 在牵张、压缩、过伸和过屈暴力时的生物力学特性。结果 在纵向牵张载荷作用下,寰椎前弓、寰枢关节及C3椎板棘突部分所受应力较为集中;在纵向压缩载荷作用下,颈椎上段应力最大部位为寰椎前弓;在过伸力矩作用下,寰椎侧块、侧块与后弓交界部位、寰椎后弓结节、枢椎上关节面及枢椎峡部所受应力较大;在过屈力矩作用下,枢椎齿状突、寰椎后弓、寰椎后弓结节、枢椎峡部及枢椎下关节突为应力相对集中部位。结论 对颈椎上段C1~3进行生物力学有限元测试,可以预测颈椎上段运动节段损伤的生物力学机制。

关键词: 颈椎, 颈部损伤, 生物力学, 有限元分析, 应力(非MeSH 词)