Ultrasound relaxes muscles and strengthens tissues containing collagen (scars, tendons, ligaments and joint capsules). They also speed up wound healing and healing of inflammation. It is irreplaceable in sports physical therapy, supports tissue regeneration after overload and injury and provides relief in case of contractures and fibrosis of muscle tissue. Ultrasound therapy has proven to be very effective for many problems. During the therapy, both mechanical and thermal energy act on the treated tissues. There is a local increase in temperature at the treatment site, which results in improved blood circulation, relaxation of tension, the healing process is also accelerated and pain is eliminated. Ultrasound therapy is therefore suitable for chronic inflammatory joint diseases, post-traumatic conditions, but also for the treatment of vascular and skin diseases.