A therapeutic ultrasound alternates compression and rarefaction (which is the decrease of density and pressure- the opposite of compression) of sound waves. Intensity decreases as the waves penetrate deeper. The waves are primarily absorbed by connective tissue. (Examples: ligaments, tendons, facia, and scar tissue)
The sounds waves bounce off the tissue and soften it, this increases the elasticity and restores your tissue back to its normal state. This is essential because the healthier your elastic tissue is, the less prone you are to re-injury. By getting rid of scar tissue you reduce the chance of a life-long, chronic condition, like arthritis or tendonitis.
Ultrasound Therapy will not only increase you soft tissue recovery rate, it will help your body rid itself of scar tissue.