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A finite element formulation and program to study transient swelling and load-carriage in healthy and degenerate articular cartilage

Olsen, Sigbjorn, Oloyede, Adekunle, & Adam, Clayton J. (2004) A finite element formulation and program to study transient swelling and load-carriage in healthy and degenerate articular cartilage. Computer Methods in Biomechanics and Biomedical Engineering, 7(2), pp. 111-120.

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Abstract

The theory of poroelasticity is extended to include physico-chemical swelling and used to predict the transient responses of normal and degenerate articular cartilage to both chemical and mechanical loading; with emphasis on isolating the influence of the major parameters which govern its deformation. Using a new hybrid element, our mathematical relationships were implemented in a purpose-built poroelastic finite element analysis algorithm (u-pi-c program) which was used to resolve the nature of the coupling between the mechanical and chemical responses of cartilage when subjected to ionic transport across its membranous skeleton. Our results demonstrate that one of the roles of the strain-dependent matrix permeability is to limit the rate of transmission of stresses from the fluid to the collagen-proteoglycan solid skeleton in the incipient stages of loading, and that the major contribution of the swelling pressure is that of preventing any excessive deformation of the matrix.

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12 citations in Scopus
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ID Code: 6706
Item Type: Journal Article
Additional Information: For more information, please refer to the journal’s website (see link) or contact the author. Author contact details: c.adam@qut.edu.au
DOI: 10.1080/10255840410001672185
ISSN: 1025-5842
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > BIOMEDICAL ENGINEERING (090300) > Biomechanical Engineering (090302)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2004 Taylor & Francis
Copyright Statement: First published in Computer Methods in Biomechanics and Biomedical Engineering 7(2):pp. 111-120.
Deposited On: 11 May 2007
Last Modified: 29 Feb 2012 23:04

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