基于复合人工股骨的有限元模型构建及有效性验证
Journal of Chongqing Medical University（2021）
Abstract
目的:建立复合人工股骨的有限元模型并对其进行有效性验证.方法:采用SAWBONE第4代复合人工股骨模型及正常人股骨尸体标本CT断层扫描数据各1例对股骨进行三维重建,重建出包含皮质骨、松质骨和髓腔结构的复合人工骨实体模型及正常人股骨三维模型共2组,并模拟股骨站立位状态下受到的轴向压缩载荷,对2组模型设定相同的边界条件,对比2组模型的应力分布情况并与国外文献数据进行模型的有效性验证.结果:复合人工股骨有限元模型应力分布情况与既往文献数据较为一致,而尸体标本股骨总体应力分布显著低于人工股骨模型.结论:复合人工股骨在有限元分析结果方面与既往文献存在较好的一致性,可用于股骨生物力学研究及骨科植入物的生物力学评估,且在材料来源以及个体化解剖差异因素方面相比尸体标本具有明显的优势.
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