Numerical Study on Mechanical Behavior of Tissue-Engineering Repaired Cartilage in Sliding Load Condition

Abstract:

Mechanical state has a major impact on the repairing effect of tissue-engineered cartilage. The unusual state could result in the degeneration of artificial and host cartilage. A repaired cartilage defects was simulated by finite element simulation based on fiber-reinforced biphasic model in sliding load condition. The results showed that in the surrounding area of defects Mises stress, compressive strain and pore pressure are affected by the amount of compression and modulus of materials. Inadequate modulus leads to the declining mechanical bearing ability in defected position, while excessive modulus leads to increasing difference between the pressure on the two sides of bonding surface between artificial cartilage and host cartilage. During the repair process, it is suggested to choose the artificial cartilage modulus with both reasonable bearing ability and less stress concentration should be considered, and the intensity of exercise should also decrease to reduce the amount of compression.

• Periodical: Applied Mechanics and Materials (Volume 441)
• Pages: 598-601
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.441.598
• Online since: December 2013
• Authors: Yu Zhou, Hai Ying Liu, Yu Tao Men, Li Lan Gao, Bao Shan Xu, Chun Qiu Zhang
• Keywords: Articular Cartilage Repair, Biphasic Model, Bonding Surface, Modulus, Sliding

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