基于CT图像下颈椎C4-C6节段三维有限元模型的建立及验证  

Establishment and Validation of a Three-Dimensional Finite Element Model of Inferior Cervical Spinal Segments C4-C6 from CT Image

作　　者：柏磊磊 赵改平[1] 王晨曦[1] 陈楠心 方新果[1] 陈二云[2] 赵庆华[3] 

机构地区：[1]上海理工大学医疗器械与食品学院,上海200093 [2]上海理工大学能源与动力学院,上海200093 [3]上海市第一人民医院,上海200080

出　　处：《生物医学工程学进展》2015年第1期6-11,共6页Progress in Biomedical Engineering

基　　金：国家自然科学基金(51106099);上海市自然科学基金(15ZR1429600);上海市科委科研计划项目(13DZ2260900)

摘　　要：选取下颈椎C4-C6活动节段的CT图像数据建立三维模型,其中包括颈椎C4-C6节段完整的各节椎体、椎间盘、终板、关节和5种韧带等结构模型。模拟前屈、后伸、左右侧弯、左右轴向旋转6种工况下的生物力学特性,经与离体实验和有限元结果对比分析证明,验证模型的可靠性。相同条件下,模型的关节活动度和应力分布特征与他人研究结果相似。该有限元模型可以分析颈椎生物力学特性,并为下颈椎临床诊断和植入物的力学性能研究奠定良好的基础。The CT images of inferior Cervical Spinal Segments C4 - C6 were selected for a three - dimen- sional model establishment which was consisted of complete each section of the vertebral body, intervertebral disc, endplate, joints, and 5 kinds of joint structure. The biomechanical characteristic was simulated in the six working conditions of flexion, extension, left lateral bending, right lateral bending, left axial rotation and right axial rota- tion. The results of the analysis were compared to the previous in vitro experiment and finite element analysis results to verify the reliability of the model. The range of motion and stress distribution characteristics of model was similar to the previous studies in vitro experiments in the same conditions. The established finite elements model has been proved to be effective in simulating the biomechanical properties of cervical spine, and therefore laid a good founda- tion for the clinical diagnosis of cervical spine and mechanical properties of the implant research

关 键 词：颈椎C4-C6节段 有限元模型 生物力学特性 

分 类 号：R318.01[医药卫生—生物医学工程]