On the importance of 3D, geometrically accurate, and subject-specific finite element analysis for evaluation of in-vivo soft tissue loads

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Abstract

 2016 Informa UK Limited, trading as Taylor \ Francis Group. Pressure ulcers are a type of local soft tissue injury due to sustained mechanical loading and remain a common issue in patient care. People with spinal cord injury (SCI) are especially at risk of pressure ulcers due to impaired mobility and sensory perception. The development of load improving support structures relies on realistic tissue load evaluation e.g. using finite element analysis (FEA). FEA requires realistic subject-specific mechanical properties and geometries. This study focuses on the effect of geometry. MRI is used for the creation of geometrically accurate models of the human buttock for three able-bodied volunteers and thr ee volunteers with SCI. The effect of geometry on observed internal tissue deformations for each subject is studied by comparing FEA findings for equivalent loading conditions. The large variations found between subjects confirms the importance of subject-specific FEA.
Original languageEnglish (Ireland)
Pages (from-to)483-491
Number of pages9
JournalComputer Methods In Biomechanics And Biomedical Engineering
Volume20
Issue number5
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • Finite element analysis
  • geometry
  • image-based modelling
  • pressure ulcer
  • soft tissue

Authors (Note for portal: view the doc link for the full list of authors)

  • Authors
  • Moerman, K.M. and van Vijven, M. and Solis, L.R. and van Haaften, E.E. and Loenen, A.C.Y. and Mushahwar, V.K. and Oomens, C.W.J.
  • Moerman, Kevin M. and van Vijven, Marc and Solis, Leandro R. and van Haaften, Eline E. and Loenen, Arjan C. Y. and Mushahwar, Vivian K. and Oomens, Cees W. J.

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