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dc.contributor.authorOrozco, Gustavo A
dc.contributor.authorTanska, Petri
dc.contributor.authorMononen, Mika E
dc.contributor.authorHalonen, Kimmo S
dc.contributor.authorKorhonen, Rami K
dc.date.accessioned2018-02-21T14:00:18Z
dc.date.available2018-02-21T14:00:18Z
dc.date.issued2018
dc.identifier.urihttps://erepo.uef.fi/handle/123456789/6130
dc.description.abstractLigaments provide stability to the human knee joint and play an essential role in restraining motion during daily activities. Compression-tension nonlinearity is a well-known characteristic of ligaments. Moreover, simpler material representations without this feature might give reasonable results because ligaments are primarily in tension during loading. However, the biomechanical role of different constitutive representations and their fibril-reinforced poroelastic properties is unknown. A numerical knee model which considers geometric and material nonlinearities of meniscus and cartilages was applied. Five different constitutive models for the ligaments (spring, elastic, hyperelastic, porohyperelastic, and fibril-reinforced porohyperelastic (FRPHE)) were implemented. Knee joint forces for the models with elastic, hyperelastic and porohyperelastic properties showed similar behavior throughout the stance, while the model with FRPHE properties exhibited lower joint forces during the last 50% of the stance phase. The model with ligaments as springs produced the lowest joint forces at this same stance phase. The results also showed that the fibril network contributed substantially to the knee joint forces, while the nonfibrillar matrix and fluid had small effects. Our results indicate that simpler material models of ligaments with similar properties in compression and tension can be used when the loading is directed primarily along the ligament axis in tension.en
dc.language.isoENen
dc.publisherSpringer Natureen
dc.relation.ispartofseriesScientific Reportsen
dc.relation.urihttp://dx.doi.org/10.1038/s41598-018-20739-wen
dc.rightsCC BY http://creativecommons.org/licenses/by/4.0/en
dc.subjectBiological physicsen
dc.subjectComputational biophysicsen
dc.subjectTissuesen
dc.titleThe effect of constitutive representations and structural constituents of ligaments on knee joint mechanicsen
dc.description.versionpublished versionen
dc.contributor.departmentDepartment of Applied Physics, activitiesen
uef.solecris.id52578160en
dc.type.publicationarticleen
dc.rights.accessrights© Authorsen
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020-EU.1.3.4./713645/EU/Biomedical Engineering and Medical Physics/BioMEPen
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/FP7-IDEAS-ERC/281180/EU/ Evaluation of Osteoarthritis Progression in a Patient-Specific Manner using Magnetic Resonance Imaging and Computational Modeling/OAPROGRESS
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020-EU.1.1./755037/EU/Novel algorithm for treatment planning of patients with osteoarthritis/ALGOA
dc.relation.doi10.1038/s41598-018-20739-wen
dc.description.reviewstatuspeerRevieweden
dc.relation.articlenumber2323en
dc.relation.issn2045-2322en
dc.relation.volume8en
dc.rights.accesslevelopenAccessen
dc.type.okmA1en
dc.type.versioninfo:eu-repo/semantics/publishedVersionen


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