TED hose are long, tight fitting stockings that place mild static pressure on the legs to prevent blood from clotting. Following major joint replacement or thoracolumbar spine surgery, the risk of developing blood clots in the legs increases. Compression garments are also used to treat swelling in the legs and ankles, varicose veins, and spider veins. TED hose may help to prevent the progression of serious vein problems and diseases.