Shoulder MRI is the study of choice in diagnosing rotator cuff tears as well as arthritis. The radiologist will be able to provide your surgeon with exact size of any rotator cuff tear present on the MRI. Other structures evaluated include ligaments and tendons as well as the labrum. The labrum is better evaluated on MR arthrography.
A specialized coil will be placed around the injured shoulder. You will lie on your back for about 30 minutes in the MRI machine.