As a therapeutic modality, ultrasound is a form of heat treatment for soft tissue injuries to minimize swelling and pain, reduce muscle spasms, and increase the range of motion. Making high frequency sound waves, ultrasound reaches deep into a damaged area, creating heat that draws blood into the area in order to enhance the healing process.
Ultrasound is applied softly with a handheld soundhead, that uses strokes or circles over the injured area. An ultrasound gel might be administered during the ultrasound therapy session. The role of an ultrasound is to speed up your healing time and alleviate your pain.
In one study, the addition of ultrasound to exercise therapy for lumbar spinal stenosis relief reduced the amount of analgesic usage by the patients. (1)