Ultrasound machines are a treatment using high or low frequency sound waves. These waves are transmitted to the surrounding tissue and vascuolature. They penetrate the muscles to cause deep tissue/muscle warming. This promotes tissue relaxation and therefore is useful in treating muscle tightness and spasms. The warming effect of the sound waves also cause vessel vasodilatation and increase circulation to the area that assists in healing. We can adjust the frequency on the machine to use waves that will decrease inflammation.