Journal
JOURNAL OF BIOMECHANICS
Volume 34, Issue 12, Pages 1649-1654Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0021-9290(01)00155-5
Keywords
cancellous bone; strength; stiffness; mechanical testing; finite element analysis
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Funding
- NIAMS NIH HHS [AR40776] Funding Source: Medline
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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.
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