完整犬股骨的解剖评估和应力分布。
Anatomical evaluation and stress distribution of intact canine femur.
机构信息
Department of Mechanical Engineering, Faculty of Technology, University of Afyon Kocatepe, Afyonkarahisar, Turkey.
出版信息
Int J Med Robot. 2013 Mar;9(1):103-8. doi: 10.1002/rcs.1457. Epub 2012 Sep 17.
BACKGROUND
In the biomedical field, three-dimensional (3D) modeling and analysis of bones and tissues has steadily gained in importance. The aim of this study was to produce more accurate 3D models of the canine femur derived from computed tomography (CT) data by using several modeling software programs and two different methods.
METHOD
The accuracy of the analysis depends on the modeling process and the right boundary conditions. Solidworks, Rapidform, Inventor, and 3DsMax software programs were used to create 3D models. Data derived from CT were converted into 3D models using two different methods: in the first, 3D models were generated using boundary lines, while in the second, 3D models were generated using point clouds.
RESULTS
Stress analyses in the models were made by ANSYS v12, also considering any muscle forces acting on the canine femur. When stress values and statistical values were taken into consideration, more accurate models were obtained with the point cloud method.
CONCLUSION
It was found that the maximum von Mises stress on the canine femur shaft was 34.8 MPa. Stress and accuracy values were obtained from the model formed using the Rapidform software. The values obtained were similar to those in other studies in the literature.
背景
在生物医学领域，对骨骼和组织进行三维（3D）建模和分析的重要性稳步提高。本研究的目的是使用几种建模软件程序和两种不同的方法，从计算机断层扫描（CT）数据中生成更精确的犬股骨 3D 模型。
方法
分析的准确性取决于建模过程和正确的边界条件。使用 Solidworks、Rapidform、Inventor 和 3DsMax 软件程序创建 3D 模型。使用两种不同的方法将从 CT 获得的数据转换为 3D 模型：第一种方法是使用边界线生成 3D 模型，第二种方法是使用点云生成 3D 模型。
结果
还考虑了作用于犬股骨的任何肌肉力，通过 ANSYS v12 在模型中进行了应力分析。当考虑到应力值和统计值时，点云方法获得了更精确的模型。
结论
研究发现，犬股骨干上的最大 von Mises 应力为 34.8 MPa。使用 Rapidform 软件形成的模型获得了应力和精度值。获得的值与文献中的其他研究相似。
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