有限元分析法研究颈椎内固定物的生物力学特点

Biomechanical features of cervical internal fixator:Finite element analysis

有限元分析法是用于结构分析的矩阵方法,将一个由无限个质点构成并且有限个自由度的连续体划分成有限个小单元体所组成的集合体。应用有限元分析法对颈椎在生理及病理情况下的生物力学特性进行分析,及不同术式、内固定器械对颈椎生物力学的影响,展望了有限元法应用于颈椎生物力学研究的前景,由于所建立的有限元模型其形态结构与人体实际存在差异,计算结果范围较为狭小和固定,随着计算机及软件的进一步发展,有限元分析法将成为脊柱生物力学研究的热点。

Finite element analysis is a matrix method for structure analysis. It divides a continuum composed of infinite material points and finite degree of freedom into an aggregation with finite small units. Finite element analysis is used to analyze the biomechanical properties of cervical vertebra under pathologic and physiologic conditions and the influence of different surgeries and fixation device on cervical biomechanics. In addition, the application of finite element analysis in cervical biomechanics study is prospected. Due to differences between finite element model and actual human body, calculation results are always limited and fixed. With development of computer and software, finite element analysis will become a focus of spinal mechanics.