特发性脊柱侧凸椎体楔形变有限元模型分析  

Analysis of vertebra wedging in 3D finite element model of idiopathic scoliosis

作　　者：杨晓明[1] 顾苏熙[1] 李明[1] 余慧琴[2] 丁祖泉[2] 傅强[1] 方秀统[1] 王静杰[1] 倪建强[1] 

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

出　　处：《中国矫形外科杂志》2008年第19期1493-1495,共3页Orthopedic Journal of China

基　　金：国家自然科学基金项目(30571888)

摘　　要：[目的]建立青少年特发性脊柱侧凸三维有限元模型,并在模型上进行初步应力统计分析,量化比较部分应力值。[方法]对1例特发性脊柱侧凸患者行薄层CT扫描,获得的原始数据通过有限元软件建立特发性脊柱侧凸三维有限元模型,在该模型上直接进行相关测量,并选取若干应力点分析正常载荷下的受力情况。[结果]侧凸段各椎体楔性变在顶椎区域最大,椎体各点应力分布也呈现顶椎区域集中的现象,楔变和应力大小均呈现向端椎逐渐减小的趋势。[结论]脊柱侧凸三维有限元模型可以方便地进行脊柱侧凸各种条件下的应力变化分析,为脊柱侧凸的相关生物力学理论和临床研究提供了可能。[Objective]To establish 3D finite element model of adolescent idiopathic scoliosis.Stress analysis on established 3D finite element model was done to compare the specific quantity of stress among every vertebra.[Method]Under the help of related softwares,3D finite element model was established from CT scan of a adolescent idiopathic scoliosi.A number of points were chosen on the model.Stress analysis was done in normal loading.[Result]Vertebral wedging and stress distribution showed significant regularity.The result was the largest in the apical region,and showed a gradual decrease to the end vertebral.[Conclusion]Relative biomechanical and clinical analysis can be easily conducted on 3D finite element model of scoliosis.It is possible to analyze diversity of stress on different conditions.

关 键 词：特发性脊柱侧凸 有限元 生物力学 Hueter-Volkmann原理 

分 类 号：R682[医药卫生—骨科学]