Department of Orthopeadics, Shanghai Xuhui Central Hospital, No. 966 Huaihai Middle Road, Xuhui District, Shanghai 200031, China.
Int J Surg. 2013;11(9):930-4. doi: 10.1016/j.ijsu.2013.06.843. Epub 2013 Jul 5.
It remains rare to report three-dimensional (3-D) finite element solid model of femurs in partial by volume rendering method, though several methods of femoral 3-D finite element modeling are already available. We aim to analyze the advantages of the modeling method by establishing the 3-D finite element solid model of femurs in partial by volume rendering.
A 3-D finite element model of the normal human femurs, made up of three anatomic structures: cortical bone, cancellous bone and pulp cavity, was constructed followed by pretreatment of the CT original image. Moreover, the finite-element analysis was carried on different material properties, three types of materials given for cortical bone, six assigned for cancellous bone, and single for pulp cavity.
The established 3-D finite element of femurs contains three anatomical structures: cortical bone, cancellous bone, and pulp cavity. The compressive stress primarily concentrated in the medial surfaces of femur, especially in the calcar femorale.
Compared with whole modeling by volume rendering method, the 3-D finite element solid model created in partial is more real and fit for finite element analysis.
尽管已经有几种股骨三维有限元建模方法，但用体积渲染法部分重建股骨三维有限元实体模型仍很少见。我们旨在通过建立股骨的体积渲染部分三维有限元实体模型来分析该建模方法的优势。
对正常人体股骨进行三维有限元建模，由三个解剖结构组成：皮质骨、松质骨和髓腔，对 CT 原始图像进行预处理后构建。此外，对不同材料特性进行有限元分析，皮质骨采用三种材料，松质骨采用六种材料，髓腔采用一种材料。
建立的股骨三维有限元模型包含三个解剖结构：皮质骨、松质骨和髓腔。股骨内侧表面，特别是股骨粗隆处，主要承受压缩应力。
与体积渲染法的整体建模相比，部分建模的三维有限元实体模型更真实，更适合有限元分析。
