The primary objective of this particular thesis project is to further examine the clinical efficacy of ultrasound. No investigation of clinical ultrasound would be complete without first examining the inherent properties of acoustic and ultrasonic energy. Consideration is given to the various aspects of therapeutic application of ultrasound, including the suggested dosages, coupling agents, and treatment techniques. The often neglected topic of ultrasonic induced physiological effects and their implications is expounded upon. Select clinical conditions with which ultrasound is a viable treatment choice are enumerated and their ramifications discussed. Numerous clinical conditions and situations which indicate/contraindicate the use of ultrasound as a treatment modality are listed at the conclusion of the project as a brief and useful reference for the clinician.