Shockwave Therapy is a FDA-cleared, minimally-invasive treatment that uses high-energy acoustic sound waves to stimulate natural healing. Compressed air accelerates a projectile within a guiding tube that strikes a metal applicator placed on the patient's area of complaint. The kinetic energy is converted into an acoustic sound wave. This acoustic sound wave transmits its energy into the tissue to a depth of 4 to 5 cm. It was first used in 1980's to treat kidney stones. In the decades to follow, researchers discovered other positive benefits for musculoskeletal disorders.