Therapeutic ultrasound is a form of therapy that utilizes high frequency sound waves to penetrate deep into the tissue. These sound waves help to break up scar tissue and promote lymphatic drainage, as well as reduce muscle spasms. In 2002, Busse et al. published a study in the Canadian Medical Association Journal reporting ultrasound can heal a non-surgical fracture up to 64 days faster than no intervention at all. In 1999, Ebenbichler et al. published a study in the New England Journal of Medicine stating ultrasound reduced the amount of calcium and improve range of motion and power in individuals suffering from calcific tendonitis of the shoulder.