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

Yener N. Yeni, David P Fyhrie

Research output: Contribution to journalArticle

61 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)1649-1654
Number of pages6
JournalJournal of Biomechanics
Volume34
Issue number12
DOIs
StatePublished - 2001
Externally publishedYes

Keywords

  • Cancellous bone
  • Finite element analysis
  • Mechanical testing
  • Stiffness
  • Strength

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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