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Summary
September 2008, Vol. 3, No. 5, Pages 743-759
, DOI 10.2217/17460751.3.5.743
(doi:10.2217/17460751.3.5.743)
Review Biomechanics and mechanobiology in osteochondral tissues LA McMahon 1, FJ O’Brien 1,2 & PJ Prendergast 1,3†1Trinity Centre for Bioengineering, School of Engineering, Trinity College, Dublin, Ireland 2Department of Anatomy, Royal College of Surgeons in Ireland, St. Stephen’s Green, Dublin, Ireland † Author for correspondence Osteochondral tissues are those that form the synovial joints, namely cartilage and bone, including sub-chondral bone. The biomechanical purpose of synovial joints is to provide lubricated contact between the moving surfaces with as little frictional forces as possible. This is achieved by separating the cartilage layers by a thin film of fluid and supporting the cartilage layers by a bony trabecular network that becomes dense and more calcified immediately underneath the cartilage layer. Each tissue’s biomechanical behavior is well understood after several decades of research and this behavior is briefly reviewed here, as are the concepts relating to the mechanical induction of cartilage degradation (osteoarthritis) with a discussion of clinical strategies for repair. Focusing on tissue-engineering strategies, the following concepts are reviewed: scaffolds, bioreactors and computational simulations, with an analysis of how these elements may be combined in future.
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