Hello Carole, The Donjoy Dura Soft Shoulder Wrap/Back Wrap can be used for both the shoulder and back. It is a 12x13 square ice pack that can be wrapped around and secured with 2 velcro straps. This is not to be used as a sling.
Edema is swelling of both legs from a buildup of extra fluid. Prolonged standing or sitting, especially in hot weather, can cause excess fluid to accumulate in the feet, ankles and lower legs. Tiny valves inside the veins of the legs can become weakened, causing a common problem called venous insufficiency.
Water retention occurs when excess fluids build up inside the body. It is also known as fluid retention or edema. Water retention occurs in the circulatory system or within tissues and cavities. It can cause swelling in the hands, feet, ankles and legs. There are several reasons why it happens, many of which are not serious. Some women experience water retention during pregnancy or before their monthly period.