The exact way shockwave works is still a matter of debate. Studies show shockwaves stimulate the release of growth factors and increase blood supply to the area to facilitate healing. It is also thought that this form of treatment can alter nerve function in the area to decrease the neuroinflammatory processes and muscle spasms. The nerves that cause pain settle so that patients will do a task that usually causes pain and find that this is almost pain-free. Extracorporeal Pulse Activation Therapy (EPAT) is the application of Shock Waves in medicine.
It is clinically proven that pressure waves when applied to injured tissues, stimulate metabolic reactions.