Guna Collagen Medical Devices are a line of injectable medical devices for the treatment of painful diseases affecting the musculoskeletal system. They are designed to help movement by limiting a physiological degeneration of joints and tissues as well as by counterbalancing damage. Local injections of Guna Collagen Medical Devices improve the structure of collagen fibres and provide mechanical support to the areas involved. Each product is specific for an anatomical area or tissue.