Ultrasound is a method of stimulating the tissue beneath the skin's surface using very high frequency sound waves. Ultrasound is applied using a transducer or applicator that is in direct contact with the patient's skin. Gel is used to reduce friction and assist transmission of the ultrasonic waves. Ultrasound waves help increase blood flow to the affected area which helps decrease inflammation at the area of injury. Conditions which ultrasound may be used for treatment include the follow examples: Ligament, Sprains