Micro-mechanical damage of trabecular bone–cement interface under selected loading conditions: a finite element study

Qinghang Zhang, Gianluca Tozzi, Jie Tong

    Research output: Contribution to journalArticlepeer-review

    384 Downloads (Pure)

    Abstract

    In this study, two micro finite element models of trabecular bone–cement interface developed from high resolution computed tomography (CT) images were loaded under compression and validated using the in situ experimental data. The models were then used under tension and shear to examine the load transfer between the bone and cement and the micro damage development at the bone–cement interface. In addition, one models was further modified to investigate the effect of cement penetration on the bone cement interfacial behaviour. The simulated results show that the load transfer at the bone–cement interface occurred mainly in the bone cement partially interdigitated region, while the fully interdigitated region seemed to contribute little to the mechanical response. Consequently, cement penetration beyond a certain value would seem to be ineffective in improving the mechanical strength of trabecular bone–cement interface. Under tension and shear loading conditions, more cement failures were found in denser bones, while the cement damage is generally low under compression.
    Original languageEnglish
    Pages (from-to)230-238
    JournalComputer Methods in Biomechanics and Biomedical Engineering
    Volume17
    Issue number3
    Early online date19 Apr 2012
    DOIs
    Publication statusPublished - Sep 2014

    Fingerprint

    Dive into the research topics of 'Micro-mechanical damage of trabecular bone–cement interface under selected loading conditions: a finite element study'. Together they form a unique fingerprint.

    Cite this