An automated workflow for the biomechanical simulation of a tibia with implant using computed tomography and the finite element method
An automated workflow for the biomechanical simulation of a tibia with implant using computed tomography and the finite element method
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DOI：
10.1016/j.camwa.2015.06.009
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发表时间：
2015-09-01
影响因子：
2.9
通讯作者：
Diebels, S.
中科院分区：
文献类型：
--
作者：
Dahmen, T.;Roland, M.;Diebels, S.
在这项研究中，一个完全自动化的工作流程，提出了骨植入物系统的生物力学模拟骨折胫骨的例子。该工作流程基于常规采集的断层扫描数据，包括自动分割和材料分配，然后是网格生成步骤，最后是使用有限元法（FEM）的机械模拟。由于有限元模拟的高计算成本，开发了自适应网格细化方案，该方案将最高分辨率限制在可以承受大量机械应力的材料上。对该方案进行了分析，结果表明，该方案对仿真精度没有相关影响。因此，提出了一种全自动、可靠且计算可行的方法来模拟骨-植入物系统的力学性能，该方法可用于从患者特定植入物的设计到手术准备和术后植入物验证的许多应用。(C)2015爱思唯尔有限公司版权所有。
In this study, a fully automated workflow is presented for the biomechanical simulation of bone-implant systems using the example of a fractured tibia. The workflow is based on routinely acquired tomographic data and consists of an automatic segmentation and material assignment, followed by a mesh generation step and, finally, a mechanical simulation using the finite element method (FEM). Because of the high computational costs of the FEM simulations, an adaptive mesh refinement scheme was developed that limits the highest resolution to materials that can take large amounts of mechanical stress. The scheme was analyzed and it was shown that it has no relevant impact on the simulation precision. Thus, a fully automatic, reliable and computationally feasible method to simulate mechanical properties of bone-implant systems was presented, which can be used for numerous applications, ranging from the design of patient-specific implants to surgery preparation and post-surgery implant verification. (C) 2015 Elsevier Ltd. All rights reserved.