Ultrasound therapy is a non-invasive instrumental physical therapy that uses high-frequency sound waves (over 20,000 Hertz), not audible by the human ear. The application takes place through two modes, used depending on the part of the body to be treated: in direct contact with the interface of a conductive gel that allows the penetration of ultrasound waves or immersion in water. These acoustic vibrations penetrate through a micro-massage generating an antalgic and decontracting effect, reducing inflammatory states.