...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Scientific reports. >Curved Beam Computed Tomography based Structural Rigidity Analysis of Bones with Simulated Lytic Defect: A Comparative Study with Finite Element Analysis
【24h】

Curved Beam Computed Tomography based Structural Rigidity Analysis of Bones with Simulated Lytic Defect: A Comparative Study with Finite Element Analysis

机译：基于弯曲的弯曲梁计算机断层扫描骨骼模拟裂解缺陷的结构刚度分析：具有有限元分析的对比研究

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, a CT based structural rigidity analysis (CTRA) method that incorporates bone intrinsic local curvature is introduced to assess the compressive failure load of human femur with simulated lytic defects. The proposed CTRA is based on a three dimensional curved beam theory to obtain critical stresses within the human femur model. To test the proposed method, ten human cadaveric femurs with and without simulated defects were mechanically tested under axial compression to failure. Quantitative computed tomography images were acquired from the samples, and CTRA and finite element analysis were performed to obtain the failure load as well as rigidities in both straight and curved cross sections. Experimental results were compared to the results obtained from FEA and CTRA. The failure loads predicated by curved beam CTRA and FEA are in agreement with experimental results. The results also show that the proposed method is an efficient and reliable method to find both the location and magnitude of failure load. Moreover, the results show that the proposed curved CTRA outperforms the regular straight beam CTRA, which ignores the bone intrinsic curvature and can be used as a useful tool in clinical practices.
机译：在本文中，引入了一种基于CT的结构刚性分析（CTRA）方法，其包含骨内在局部曲率，以评估人股骨的压缩衰竭载荷，具有模拟的裂缝缺陷。所提出的CTRA基于三维曲线光束理论，以获得人股骨模型内的临界应力。为了测试所提出的方法，在轴向压缩下机械地测试具有和不具有模拟缺陷的十个人尸体股骨。从样品中获取定量计算断层摄影图像，并进行CTRA和有限元分析以获得故障载荷以及直线横截面的刚性。将实验结果与来自FEA和CTRA获得的结果进行比较。通过弯曲光束CTRA和FEA预测的故障载荷与实验结果一致。结果还表明，该方法是一种有效且可靠的方法，可以找到故障负载的位置和大小。此外，结果表明，所提出的弯曲CTRA优于普通的直梁CTRA，其忽略骨内在曲率，可以用作临床实践中的有用工具。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号