体绘制分体建模法建立人体股骨有限元模型  

Establishing the 3-D finite element solid model of femur in partial by volume rendering

作　　者：钟务学[1] 朱建民[2] 张银网[2] 朱海波[2] 陈云[3] 徐灵军[1] 张浩[1] 

机构地区：[1]江苏大学临床医学院,江苏212013 [2]上海市徐汇区中心医院骨科,上海200031 [3]上海交通大学Med-X研究院,上海200240

出　　处：《中国骨与关节外科》2012年第1期48-53,共6页Chinese Journal of Bone and Joint Surgery

摘　　要：背景:股骨三维有限元研究建模方法有很多种,而采用体绘制分体建模方法至目前为止尚未见报道。目的:采用体绘制分体建模方法建立正常人股骨三维有限元实体模型,分析该建模方法的优越性。方法:将CT原始图像进行去噪等预处理后,建立正常人股骨三维有限元模型,模型包括皮质骨、松质骨及髓腔3部分解剖结构。再将皮质骨分为3种材料、松质骨分为6种材料,骨髓为单一材料属性分体建模,并行有限元力学分析。结果:采用体绘制分体建模方法建立的人股骨三维有限元模型包括皮质骨、松质骨及髓腔解剖结构。结论:采用体绘制分体建模比整体建模单一划分材料更接近真实情况,更符合有限元分析的要求。Background： There are several methods of femoral 3-D finite element modeling, but volume rendering method in partial, to our knowledge, have not been reported. Objective： The aim of this study is to establish the 3-D finite element solid model of femur in partial by volume rendering, and to analyse the advantages of this method. Methods： After the CT original image pretreatment, a three-dimensional finite element model of the human femur was constructed, which include including cortical bone, cancellous bone and pulp cavity was constructed. Moreover, we construc- ted the model respectively on the bases of attribution which includes three types of material of cortical bone, six types of material of cancellous bone, one type material of marrow. Also we analysed thThe mechanics of femur were assessed by finite-element analysis. Results： The three-dimensional finite element model of femur was established, including cortical bone, cancellous bone and pulp cavity anatomical structure. Conclusions ： The 3-D finite element solid model created in partial is more real than that of whole modeling by volume rendering method, and more fit for finite element analysis.

关 键 词：股骨 分体建模 有限元 体绘制 

分 类 号：R681.8[医药卫生—骨科学]