髋臼三维记忆内固定系统全真三维有限元模型快速建立及其对力学仿真的意义  

Establishment of three dimensional finite element model of acetabular three dimensional memory fixation system and its significance on mechanics simulation

作　　者：徐峰[1] 苏佳灿[2] 吴建国[1] 张春才[2] 

机构地区：[1]同济大学生命科学与技术学院,上海市200092 [2]解放军第二军医大学长海医院骨科,上海市200433

出　　处：《中国临床康复》2005年第2期68-70,共3页Chinese Journal of Clinical Rehabilitation

基　　金：第二军医大学长海医院二五八项目(258-5)~~

摘　　要：目的:目前,有限单元法(finiteelementmethod,FEM)已成为生物力学研究的有力手段。尽管随着计算机图形学、数字图像处理学的发展,建立可视化三维数字模型的技术已经逐步成熟并走向了应用。但是,由于内固定器种类繁多、形状复杂,建立可以进行生物力学计算分析的有限元模型依然是一件繁琐而复杂的工作,包括髋臼三维记忆内固定系统(acetabularthree-dimensionalmemoryfixationsystem,ATMFS复杂形状内)固定器全真三维有限元模型快速建立方法。方法:引入材料坐标系和运动变形方法,快速有效建立ATMFS复杂形状内固定器全真三维有限元模型。结果:所构建的ATMFS三维有限元模型能够准确反映内固定器结构特征,能够进行力学分析。结论:此建立全真三维有限元模型方法对ATMFS复杂形状内固定器的建模是快速而有效的。AIM:Finite element method has been a forceful and effective means in research of biomechanics nowadays.Though with the development of computer graphics and di gital image processing the technique of building visual three dimensional digit al models is available and fruitful, it is still a burdensome and complicated wo rk to build finite element models that can compute and analyze the biomechanics because of various types and complex shapes of internal fixation device,includin g a quick way to build three dimensional finite element model of complex shape internal fixation of the acetabular three dimensional memory fixation system(AT MFS). METHODS:ATMFS three dimensional finite element model of complex shape interna l fixation was established quickly and effectively by using material coordinate and motor deformation method. RESULTS:The structure feature of internal fixation could be accurately reflect ed by ATMFS three dimensional finite element model and the subsequent mechanica l analysis could be done. CONCLUSION:The way of establishing the three dimensional finite element model is effective and quickly for building ATMFS with complex shape internal fixatio n.

关 键 词：生物力学 髋臼 可行性研究 

分 类 号：R496[医药卫生—康复医学]