Abstract
The quantitative aspects of degradation of some polymer used in medical practice as surgical implants are reviewed. The quantitative criteria of biocompatibility of these polymers and their response to the living body are discussed. New experimental data are shown relating the degradation rate of polyesters, polyamides, elastomers in the organism to that in model media. The catalytical activity of biological media (water, salts and enzymes) are also considered in detail.