中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (4): 585-588.doi: 10.3969/j.issn.1673-8225.2012.04.003

• 数字化骨科 digital orthopedics • 上一篇    下一篇

C4~C6颈椎有限元模型的建立和多点力学加载方法☆

柏传毅1,宁  宁1,凌  伟2,田振兴2,党晓谦1,王坤正1   

  1. 1西安交通大学医学院第二附属医院骨一科,陕西省西安市 710004;2西安交通大学航天航空学院,陕西省西安市
    710049
  • 收稿日期:2011-07-21 修回日期:2011-11-18 出版日期:2012-01-22
  • 通讯作者: 王坤正,教授,西安交通大学医学院第二附属医院骨一科,陕西省西安市 710004
  • 作者简介:柏传毅☆,男,1971年生,江苏省宝应县人,汉族,2009年西安交通大学毕业,博士,副教授,主要从事脊柱,关节疾病的研究。 baichuanyiys@sina.com

Bai Chuan-yi1, Ning Ning1, Ling Wei2, Tian Zhen-xing2, Dang Xiao-qian1, Wang Kun-zheng1   

  1. 1First Department of Orthopedics, Second Affiliated Hospital, Xi’an Jiaotong University School of Medicine, Xi’an  710004, Shaanxi Province, China; 2School of Aerospace, Xi’an Jiaotong University, Xi’an  710049, Shaanxi Province, China
     
  • Received:2011-07-21 Revised:2011-11-18 Online:2012-01-22
  • Contact: Wang Kun-zheng, Professor, First Department of Orthopedics, Second Affiliated Hospital, Xi’an Jiaotong University School of Medicine, Xi’an 710004, Shaanxi Province, China
  • About author:Bai Chuan-yi☆, Doctor, Associate professor, First Department of Orthopedics, Second Affiliated Hospital, Xi’an Jiaotong University School of Medicine, Xi’an 710004, Shaanxi Province, China baichuanyiys@sina.com

摘要:

BACKGROUND: The motion of human cervical spine is the change of biomechanics and displacement among multiple sections. To establish the finite element model of multiple sections and multipoint mechanical loading can provide a high accuracy model and scientific analysis method for the biomechanics research of the cervical spine.
OBJECTIVE: To establish the finite element model of the human lower cervical spine (C4-C6), and put forward multipoint mechanical loading on this basis.
METHODS: CT images of normal cervical spine (C4-C6) were got as data sources. Three-dimensional finite element model was established by using Mimics10.0 and Ansys11.0 finite element analysis software, and the model was took under multipoint mechanical loading to imitate the motion of axial, bucking, extension, side-bending and twisting which occur in physiological condition. Change of the stress and the displacement were analyzed under different motion of lower cervical spine (C4-C6).
RESULTS AND CONCLUSION: The finite element model which showed geometric shape lifelike, repeated the anatomical structure of cervical spine and had well geometric similarity to physical organization. Under different mechanical loading conditions (Se, Sz), the stress of bucking and extension was bigger than side-bending, and side-bending was bigger than axial. And the level of displacement was very low, this may because of the stress of axial load was very small. The methods of established the finite element model of the human lower cervical spine (C4-C6) and took multipoint mechanical loading are scientific and effective. This provides a high accuracy model and scientific analysis method for the biomechanics research of the cervical spine.

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