Hyaluronic acid is the prototype of a wide range of saccharide biopolymers (glycosaminoglycans), important components of all extracellular tissue structures, including cartilage and synovial fluid. The active substance of SUPLASYN is a hyaluronic acid of defined molecular chain length with a high degree of purity. The introduction of SUPLASYN into the synovial space will assist in the normalization of the joint following arthrocentesis.