Diagnostic ultrasound in sports medicine: current concepts and advances.

Diagnostic ultrasound is a valuable imaging tool that is slowly gaining in popularity among sports medicine clinicians. Commonly referred to as "musculoskeletal ultrasound," its valuable role in assisting with sports medicine diagnoses has been to date underused for a variety of reasons. Effective clinical usage for sports medicine diagnoses includes commonly seen conditions such as rotator cuff disease, ulnar collateral ligament of the elbow injury, and internal derangement of the knee, among many others. Limitation of clinical usage has been deterred by the cost of the unit, perception of time associated with assessment procedures, and the lack of formal training associated with diagnostic implementation. However, when properly used, musculoskeletal ultrasound can increase the accuracy of diagnosis and treatment, improve time to treatment intervention, and improve patient satisfaction. The purpose of this paper is to review the fundamentals of musculoskeletal ultrasound and present its specific diagnostic uses.