A method of repairing an intervertebral disc of a patients body includes identifying a target area of the intervertebral disc. An ultrasound generator is placed proximate the target area and outside the patients body. An area temperature at the target area is monitored. Ultrasonic energy is generated with the ultrasound generator within a predetermined energy range. The ultrasonic energy is adjusted in response to the area temperature exceeding a predetermined temperature range. An apparatus for repairing an intervertebral disc of a patients body is also provided.
