中国组织工程研究2017，Vol.21Issue(11)：1748-1752,5.DOI:10.3969/j.issn.2095-4344.2017.11.019
有限元分析:椎间盘退变对颈椎生物力学的影响
Biomechanical effects of intervertebral disc degeneration on the cervical spine:a finite element analysis
摘要
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 97705 nodes and 372896 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.关键词
骨科植入物/脊柱植入物/颈椎/生物力学/有限元/椎间盘高度/退变/国家自然科学基金分类
医药卫生引用本文复制引用
李斌,赵文志,陈秉智..有限元分析:椎间盘退变对颈椎生物力学的影响[J].中国组织工程研究,2017,21(11):1748-1752,5.基金项目
国家自然科学基金(31270999) the National Natural Science Foundation of China, No. 31270999 （31270999）
