Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (13): 2299-2302.doi: 10.3969/j.issn.1673-8225.2010.13.006

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Establishment and validation of a three-dimensional finite element model of the cervical spine

Li Bin1, Zhao Wen-zhi1, Chen Bing-zhi2, Su Jin1, He Sheng-wei1, Fang Xu 1
   

  1. 1 Department of Orthopedics, Second Affiliated Hospital of Dalian Medical University, Dalian   116027, Liaoning Province, China; 2 Institute of Traffic and Transportation Engineering, Dalian Jiaotong University, Dalian  116028, Liaoning Province, China
  • Online:2010-03-26 Published:2010-03-26
  • Contact: Zhao Wen-zhi, Professor, Doctor, Chief physician, Master’s supervisor, Department of Orthopedics, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, Liaoning Province, China drzwz@163.com
  • About author:Li Bin★, Studying for master’s degree, Department of Orthopedics, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, Liaoning Province, China libinys@yahoo.cn
  • Supported by:
    the National Natural Science Foundation of China, No.30970708*

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Abstract:

BACKGROUND: Finite element analysis, as a numerical calculation of a discrete method, is characterized by short experimental time, less cost, comprehensive mechanical performance test and repeatable experiments. But more focused on the lumbar spine model for the study, due to anatomy and injury mechanisms of cervical complex, poor stability, there are few studies on cervical spine finite element model, and research is limited to a single vertebra and the motion segment.
OBJECTIVE: To establish the cervical three-dimensional finite element model and it will be used for clinical study.
METHODS: A three dimensional finite element model of the cervical spine was established from the CT scan images of a cadaver cervical spin，Solid-Works2003, HyperMesh and ANSYS11.0. Different material was assigned different mechanical parameter, and we created a cervical three-dimensional finite element model．After setting the boundary, the model is loaded to simulate the flexion/extension, left/right bending and rotating. The relationship of movement and displacement will compare with the results of experiment in vitro.
RESULTS AND CONCLUSION: The model has 372 896 solid elements and 97 705 points. Established model in flexion/extension, left/right lateral bending, left/right rotation range of motion in six directions, theoretical analysis results and measured data were highly consistent in biomechanics. Results of analysis of finite element and other experiment results have good coincidence and the method can be used to establish the model of the living cervical spine.

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