Finite element calculated uniaxial apparent stiffness is a consistent predictor of uniaxial apparent strength in human vertebral cancellous bone tested with different boundary conditions

被引:62
作者
Yeni, YN [1 ]
Fyhrie, DP [1 ]
机构
[1] Henry Ford Hosp, Breech Res Lab, Ctr Bone & Joint, Detroit, MI 48202 USA
关键词
cancellous bone; strength; stiffness; mechanical testing; finite element analysis;
D O I
10.1016/S0021-9290(01)00155-5
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
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.
引用
收藏
页码:1649 / 1654
页数:6
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