Abstract: The invention relates to a chronic articular inflammation-modulating composition which uses collagen-polyvinylpyrrolidone. Collagen turnover is modulated using collagen-PVP in patients with rheumatoid arthritis and osteoarthritis, since the biocomplex negatively regulates collagenolytic activity and increases the content of type III collagen and TIMP-1 to levels similar to those observed in normal synovia. In this way, the chronic inflammatory process is altered by the collagen-PVP, as described above, owing to the negative regulation of IL-1?, the TNF-? of IL-8 and the adhesion molecules, since said molecules can induce the expression and activation of collagenolytic enzymes, as well as the proliferation and migration of synovial cells by means of the adhesive mechanisms including the adhesion molecules, and the induction and activation of Cox-1.