中国组织工程研究与临床康复2011，Vol.15Issue(9)：1557-1561,5.DOI:10.3969/j.issn.1673-8225.2011.09.010
基于CT扫描及CAD技术建立下腰椎三维有限元模型
Construction of a three-dimensional finite element model of lower lumbar spine based on computed tomography images and computer aided design
摘要
Abstract
BACKGROUND: Currently, the rapid developments of computer technology and finite element theory provide technical supports for construction of lumbar spine models. The finite element model with high accuracy and reliability provides better platform for clinical biomechanics, such as intervertebral discs, lamina excision, lumbar fusion, and spinal internal fixation materials.OBJECTIVE: To construct a lumber spine (L3-5) biomechanical model using three-dimensional finite element method.METHODS: Reconstructing the skeleton through CT scan, recording the edges of image, calibrating in sequence of point, line,face and solid. Mapped-mesh technique was used to obtain the finite element, adopt finite element commercial software package Unigraphics V18.0 was used to study the response of the disc model.RESULTS AND CONCLUSION: The finite element model of lower lumbar spine (L3-5) was reconstructed, which can simulate biomechanical experiment. There were 6482 nodes and 31326 units in the model. Based on geometrical shape of model, the mesh generation was reduced minimum utilizing mesh generator, which can not only ensure model accuracy and calculation feasibility, but also meet needs of biomechanical studies.关键词
腰椎/有限元模型/生物力学/CT/CAD分类
医药卫生引用本文复制引用
付裕,阮狄克,霍洪军,杨学军,李晨光..基于CT扫描及CAD技术建立下腰椎三维有限元模型[J].中国组织工程研究与临床康复,2011,15(9):1557-1561,5.基金项目
内蒙古医学院第二附属医院科研基金:下腰椎三维有限元模型的建立 （）
