Rotator Cuff – Large Full Thickness Tear
The rotator cuff consists of four muscles: subscapularis, supraspinatus, infraspinatus and teres minor, which arise from the anterior and posterior aspects of the scapula respectively. The tendons come together to form a thick cuff which gives structural support to the shoulder joint and insert onto the humeral head.
The following example shows large full thickness tears of the supra- and infraspinatus tendons with tendon retraction and muscle atrophy. There is a large joint effusion which communicates freely with a large amount of fluid in the subacromial/subdeltoid bursa.
Coronal T2, T1 and STIR; sagittal T1 and axial T2 weighted images are shown: