PASTA Lesion (Partial Articular Sided Tendon Avulsion)
What is it?
The rotator cuff is comprised of the four muscles and tendons that surround the top of the upper arm bone (humerus) and hold it in the shoulder joint (see Anatomy)
A PASTA lesion may result suddenly from a single traumatic event or may develop gradually. The lesion is a detachment of the front of the supraspinatus tendon from its attachment inside the joint. The majority of the tendon is still intact and attached properly.