Articular cartilage (AC) is a load bearing material that provides a low friction wear resistant interface in synovial joints. Naturally-occurring and stimulated intrinsic repair of damaged AC is ineffective. Thus, there is a desire to engineer effective replacement tissue that could be used for AC repair. Previous studies [1] have shown that culture of immature cartilage with medium including TGF-β1 will result in a more mature tissue than culture with IGF-1. Detailed characterization of tissue mechanical properties would be helpful for development of cartilage growth models [2].

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