The hipbath is one of the most useful forms of hydrotherapy. As the name suggests, this mode of treatment involves only the hips and the abdominal region below the navel. A special type of tub is used for the purpose. The tub is filled with water in such a way that it covers the hips and reaches up to the navel when the patient sits in it. Generally, four to six gallons of water are required. If the special tub is not available, a common tub may be used. A support may be placed under one edge to elevate it by two or three inches. Hipbath is given in cold, hot, neutral or alternate temperatures.