Biomechanical effects of intervertebral disc degeneration on the cervical spine: a finite element analysis

doi:10.3969/j.issn.2095-4344.2017.11.019

Abstract

Abstract:

BACKGROUND: The biomechanics of cervical spine is complicated. It is an important way to select the appropriate biomechanical model and research method so as to explore the diagnosis and evaluation mechanism of cervical spine injury and prognosis judgement.

OBJECTIVE: To discuss the alternation of cervical biomechanics after the degeneration of cervical disc and the influence of degeneration on cervical stability.

METHODS: (1) A three-dimensional finite element model of cervical spine was established from the CT scan images of cervical spine of a healthy male volunteer, Solid-Works2015, HyperMesh and ANSYS11.0. We created a cervical three-dimensional finite element model. To simulate the degenerative disc by modified the mechanical characters and height of the disc model, we observed the biomechanics of the impact on the cervical spine (the range and the stress on intervertabral disc).

RESULTS AND CONCLUSION: (1) The entire model with a total of 97 705 nodes and 372 896 elements. Ligament and joint capsule were also constructed. Face to face contact element was used in the facet joint, with complete structure and high accuracy of measurement of spatial structure. (2) The range of motion of cervical spine increased during degeneration compared with normal cervical segments (P < 0.05). (3) Intervertebral disc degeneration caused angle increase at disc and motion segment. Osteophyte formed on vertebral edge. Intervertebral disc degeneration caused cervical instability. Simultaneously, instability increased the disc degeneration.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: Cervical Vertebrae, Biomechanics, Finite Element Analysis, Tissue Engineering

CLC Number:

R318

Li Bin, Zhao Wen-zhi, Chen Bing-zhi. Biomechanical effects of intervertebral disc degeneration on the cervical spine: a finite element analysis[J]. Chinese Journal of Tissue Engineering Research, 2017, 21(11): 1748-1752.

Figures/Tables 3

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