This presentation considers the incidence, evaluation, and management of rotator cuff disease and injury. Pathogenesis, symptoms, physical findings, treatment (therapeutic and surgical), and prevention are discussed. It is noted that rotator cuff problems, common in athletes, are usually related to an error in training or lack of training. They can be successfully treated non-operatively although it may require several weeks or months to obtain a cure. Included are descriptions of exercises for rehabilitation of rotator cuff injuries. (CB)