ABSTRACT
Synthetic materials used for biological applications (biomaterials) can be classified as metals, ceramics, polymers,and composites. Polymeric materials and their composites have been used for years, typical applications being tissue replacement, augmentation and support of tissues, and the delivery of drugs. Based on their behavior in living tissue, polymeric biomaterials can be divided into biostable, bioabsorbable (biodegradable or bioresorbable), and partially bioabsorbable materials. Biostable polymers are inert, cause minimal response in the surrounding tissue, and retain their properties for years. Biostable polymers, e.g., polyethylene and polypropylene, are used as endoprostheses and sutures.
