Injuries to the muscle-tendon-enthesis unit are common and a significant source of
pain and loss of function. This article focuses on the important anatomical and biomechanical
considerations for each component of the muscle-tendon-enthesis unit. We review normal
and pathologic conditions affecting this unit, illustrating the imaging appearance
of common disorders on magnetic resonance imaging and ultrasound. Knowledge of the
anatomy and biomechanics of these structures is crucial for the radiologist to make
accurate diagnoses and provide clinically relevant assessments.
Keywords
muscle - tendon - enthesis - magnetic resonance imaging - ultrasound
