Experimental Study on Creep Characteristics of Microdefect Articular Cartilages in the Damaged Early Stage.
Journal
Journal of healthcare engineering
ISSN: 2040-2309
Titre abrégé: J Healthc Eng
Pays: England
ID NLM: 101528166
Informations de publication
Date de publication:
2019
2019
Historique:
received:
25
06
2019
revised:
26
09
2019
accepted:
17
10
2019
entrez:
13
12
2019
pubmed:
13
12
2019
medline:
22
8
2020
Statut:
epublish
Résumé
Traumatic joint injury is known to cause cartilage deterioration and osteoarthritis. In order to study the mechanical mechanism of damage evolution on articular cartilage, taking the fresh porcine articular cartilage as the experimental samples, the creep experiments of the intact cartilages and the cartilages with different depth defect were carried out by using the noncontact digital image correlation technology. And then, the creep constitutive equations of cartilages were established. The results showed that the creep curves of different layers changed exponentially and were not coincident for the cartilage sample. The defect affected the strain values of the creep curves. The creep behavior of cartilage was dependent on defect depth. The deeper the defect was, the larger the strain value was. The built three-parameter viscoelastic constitutive equation had a good correlation with the experimental results and could predict the creep performance of the articular cartilage. The creep values of the microdefective cartilage in the damaged early stage were different from the diseased articular cartilage. These findings pointed out that defect could accelerate the damage of cartilage. It was helpful to study the mechanical mechanism of damage evolution.
Identifiants
pubmed: 31827742
doi: 10.1155/2019/8526436
pmc: PMC6885224
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
8526436Informations de copyright
Copyright © 2019 Huchen Gong et al.
Déclaration de conflit d'intérêts
The authors declared that they have no conflicts of interest to this work.
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