Therapeutic ultrasound is a form of deep heat therapy created by sound waves. When applied to soft tissues and joints, the sound waves are a form of micro-massage that help reduce swelling, increase blood flow, and decrease pain, stiffness, and spasms.
Ultrasound therapy has been a widely used therapy for musculoskeletal injuries as it helps in rapidly healing the injured tissue as well as decreasing the pain. However, it is underutilized despite its great potential and this is because of a few factors including the lack of education for therapists to use this treatment.
The basic benefits of ultrasound therapy are an increase in the elasticity of the collagen found in joint capsules, tendons and scar tissues; an increase in the motor as well as the sensory nerve conduction that helps in reducing the pain; the increase in blood flow; the reduction of muscle spasm from an altered contractile activity of the skeletal muscle; and the muscle spasm reduction through the reduction of the activity of the muscle spindle.