Focal shockwaves, otherwise known as ESWT, are high-energy acoustic waves, characterised by a peak of positive pressure followed by a phase of negative pressure; they are generated in rapid sequence and are able to spread inside the body's tissues. "They are focal" because the shock wave beam is precisely "focused" on the anatomical structure of the pathology. The diffusion of these acoustic waves within the organism tissues evokes a series of biochemical reactions, with important therapeutic effects: pain relieving, analgesic and trophic thanks to a neoangiogenesis process, which has been proven by numerous clinical and experimental experiences. It is a non-invasive therapy, with almost no side-effects and it can therefore be repeated, if necessary. The therapeutic indications have been clearly defined by the International Society for Medical Shockwave Treatment (ISMST) and approved by all of the international companies that deal with it, which in Italy is the SITOD (Società Italiana Terapia con Onde D'Urto).