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- W2002369319 abstract "The optimal mechanical properties of a scaffold to promote cartilage generation in osteochondral defects in vivo are not known. During normal daily activities cartilage is subjected to large cyclic loads that not only facilitate nutrient transport and waste removal through the dense tissue but also act as a stimulus to the chondrocytes. In contrast, cartilage tissue is commonly engineered in vitro in a static culture; hence, in many cases, the properties of scaffolds have been tailored to suit this in vitro environment. In this study, a mechanoregulation algorithm for tissue differentiation was used to determine the influence of scaffold material properties on chondrogenesis in a finite element model of an osteochondral defect. It is predicted that increasing the stiffness of the scaffold increases the amount of cartilage formation and reduces the amount of fibrous tissue formation in the defect, but this only holds true up to a certain threshold stiffness above which the amount of cartilage formed is reduced. Reducing the permeability of the scaffold was also predicted to be beneficial. Considering a nonhomogeneous scaffold, an optimal design was determined by parametrically varying the mechanical properties of the scaffold through its depth. The Young's modulus reduced nonlinearly from the superficial region through the depth of the scaffold, while the permeability of the scaffold was lowest in the superficial region. As tissue engineering moves from a science toward a product, engineering design becomes more relevant, and predictive models such as that presented here can provide a scientific basis for design choices." @default.
- W2002369319 created "2016-06-24" @default.
- W2002369319 creator A5036165760 @default.
- W2002369319 creator A5045482826 @default.
- W2002369319 date "2006-09-01" @default.
- W2002369319 modified "2023-10-18" @default.
- W2002369319 title "Prediction of the Optimal Mechanical Properties for a Scaffold Used in Osteochondral Defect Repair" @default.
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- W2002369319 doi "https://doi.org/10.1089/ten.2006.12.2509" @default.
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