MRI arthrography
Coronal T1 FS image demonstrates humeral avulsion of the posterior band of the Inferior glenohumeral humeral ligament (IGHL) from its humeral insertion with an intact labrum; there’s also “J sign” of the lax inferiorly displaced fibers (arrow) and extravasation of intra-articular contrast. There are also appearances of repair of intra-articular lesion of the supraspinatus tendon.