A comparative study of continuum and structural modelling approaches to simulate bone adaptation in the pelvic construct
File(s)applsci-09-03320.pdf (8 MB)
Published version
Author(s)
Zaharie, Dan
Phillips, Andrew
Type
Journal Article
Abstract
This study presents the development of a number of finite element (FE) models of the pelvis using different continuum and structural modelling approaches. Four FE models were developed using different modelling approaches: continuum isotropic, continuum orthotropic, hybrid isotropic and hybrid orthotropic. The models were subjected to an iterative adaptation process based on the Mechanostat principle. Each model was adapted to a number of common daily living activities (walking, stair ascent, stair descent, sit-to-stand and stand-to-sit) by applying onto it joint and muscle loads derived using a musculoskeletal modelling framework. The resulting models, along with a structural model previously developed by the authors, were compared visually in terms of bone architecture, and their response to a single load case was compared to a continuum FE model derived from computed tomography (CT) imaging data. The main findings of this study were that the continuum orthotropic model was the closest to the CT derived model in terms of load response albeit having less total bone volume, suggesting that the role of material directionality in influencing the maximum orthotropic Young’s modulus should be included in continuum bone adaptation models. In addition, the hybrid models, where trabecular and cortical bone were distinguished, had similar outcomes, suggesting that the approach to modelling trabecular bone is less influential when the cortex is modelled separately.
Date Issued
2019-08-13
Date Acceptance
2019-08-07
Citation
Applied Sciences, 2019, 9 (16), pp.1-18
ISSN
2076-3417
Publisher
MDPI AG
Start Page
1
End Page
18
Journal / Book Title
Applied Sciences
Volume
9
Issue
16
Copyright Statement
© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access
article distributed under the terms and conditions of the Creative Commons Attribution
(CC BY) license (http://creativecommons.org/licenses/by/4.0/).
article distributed under the terms and conditions of the Creative Commons Attribution
(CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Sponsor
The Royal British Legion
Identifier
https://doi.org/10.3390/app9163320
Grant Number
Centre for Blast Injury Studie
Publication Status
Published
OA Location
https://www.mdpi.com/2076-3417/9/16/3320/pdf
Date Publish Online
2019-08-13