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A poroelastic finite element model to describe the time-dependent response of lumbar intervertebral disc

Nikkhoo, M ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1166/jmihi.2011.1035
  3. Publisher: 2011
  4. Abstract:
  5. Investigation of the relationship between different types of mechanical loading and the failure of the intervertebral disc requires a well-defined finite element model. The objective of this paper was to develop and validate a nonlinear axisymmetric poroelastic finite element model of intervertebral disc and show its capability for studying the time-dependent response. After presenting the poroelastic model of intervertebral disc, the results of prolonged (short-term and long-term creep tests) and cyclic loading were compared with in vivo and in vitro experimental data. The trends predicted by FE model agreed well with measured experimental data and showed its validity for dynamic analysis. Hence, this model can be used to study how different dynamic loading regimes are important as risk factors for initiation of intervertebral disc degeneration. Copyright
  6. Keywords:
  7. Finite element modeling ; Intervertebral disc ; Poroelastic theory ; Time-dependent response
  8. Source: Journal of Medical Imaging and Health Informatics ; Volume 1, Issue 3 , 2011 , Pages 246-251 ; 21567018 (ISSN)
  9. URL: http://www.ingentaconnect.com/content/asp/jmihi/2011/00000001/00000003/art00008?token=0053110eb6e58654624312542354765217d663b707b5e4e2663433b393f6a333f256641116c92cbc00c