摘要
Hangmann骨折是近年来发病率逐渐上升的上部颈椎损伤之一.植骨融合钢板内固定术作为一种较新的手术方案刚刚开始在国内采用.本文采用基于医学影像的快速自动三维有限元模型的构建方法,建立了上颈椎C2～C4两个运动节段的三维有限元模型,对上颈椎正常状态、植骨融合钢板系统内固定术方案在模拟生理荷载下的三维六自由度的稳定性、内固定器植入后的应力情况进行了计算和比较分析,并通过实验验证了内固定手术对上颈椎的生物力学稳定性和内固定器的力学疗效特征.本文结果显示:对Hangmann骨折治疗,植骨融合钢板系统内固定技术是一个较好的可供选择的措施之一.
The incidence of Hangmann fracture is on the increase with the development of society and industrialization. There are also reports in the literature using C2 corpectomy for unstable Hangmann fracture. With the development on biomechanics especially the finite element method（FEM） in the domain of medical research and clinical usage, the research on upper cervical spine concerning Hangmann fracture is able to be well carry on. The research includes a biomechanical experiment of cadaver specimens and FEM analysis accordingly. Using an automated method to generate finite element models of geometrical complex structure from medical images, the research established corresponding three dimensional finite models to simulate different surgical option of Hangmann fracture, testified the models by loads, calculated the stabilities and stress of models. The corresponding results of finite element method were summarized with experiment of cadaver specimens. The research demonstrate that newly used clinical therapeutics, is an good option for Hangmann fracture with C2-3 intervertebral disc injury interpreted from biomechanical aspect.
出处
《力学季刊》
CSCD
北大核心
2005年第3期491-496,共6页
Chinese Quarterly of Mechanics
