Abstract
Bioresorption is a desirable property for materials and devices used in tissue engineering and drug delivery. Various natural and synthetic bioresorbable polymers are utilized for biomedical and drug delivery applications. Most natural polymers, such as cellulose, chitin, chitosan, alginates, hyaluron, dextran and pullulan, are bioresorbable. Bioresorption takes place by chemical degradation mediated by water, enzymes, or microorganisms. Bioresorbable polymers are increasingly being used to replace metallic orthopaedic devices where only temporary fixation of tissue is required. It is possible that bioresorbable natural polymer materials will reduce the need for synthetic polymers and thereby produce a positive effect both environmentally and economically. The present chapter provides a brief outline of work that is under way in the area of natural bioresorbable polymer research and development.
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