Ultrasound Unit stimulates tissue with sound waves. It uses these waves for treatment commonly for those with musculoskeletal issues. The stimulation causes heating and cell activity that helps in faster recovery times for certain injuries. This type of ultrasound therapy has been proven and been in use since the 1950s. The Ultrasound devices can be used in areas of the neck, shoulders, wrists, upper and lower back, hips, legs, knees and feet.