Finite element calculated uniaxial apparent stiffness is a consistent predictor of uniaxial apparent strength in human vertebral cancellous bone tested with different boundary conditions
Finite element calculated uniaxial apparent stiffness is a consistent predictor of uniaxial apparent strength in human vertebral cancellous bone tested with different boundary conditions
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DOI：
10.1016/s0021-9290(01)00155-5
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发表时间：
2001-12-01
影响因子：
2.4
通讯作者：
Fyhrie, DP
中科院分区：
文献类型：
--
作者：
Yeni, YN;Fyhrie, DP
松质骨的单轴表观强度和刚度之间的强对应关系允许使用刚度作为骨强度的预测指标。由于实验条件不同，松质骨机械性能的测量值在实验之间可能会有所不同。在当前的研究中，骨体积分数、实验确定的和有限元（FE）预测的刚度作为松质骨极限强度的预测因子在两个不同的组中进行了检查，每个组都使用不同的端部约束进行测试。结果表明，虽然强度与骨体积分数和实验确定的刚度之间的关系总是很重要，但测试组之间的关系是不同的。通过有限元模型估计的表观刚度可以一致地预测所有检查的实验方案中人类松质骨的最终强度。 (C) 2001 Elsevier Science Ltd. 保留所有权利。
Strong correspondence between the uniaxial apparent strength and stiffness of cancellous bone allows the use of stiffness as a predictor of bone strength. Measured values of mechanical properties in cancellous bone can be different between experiments due to different experimental conditions. In the current study, bone volume fraction, experimentally determined and finite element (FE) predicted stiffness were examined as predictors of cancellous bone ultimate strength in two different groups each of which was tested using a different end constraint. It is demonstrated that, although always significant, the relationships of strength with bone volume fraction and experimentally determined stiffness are different between test groups. Apparent stiffness, estimated by FE modeling, predicts the ultimate strength of human cancellous bone consistently for all examined experimental protocols. (C) 2001 Elsevier Science Ltd. All rights reserved.