Arthrographic MRI delineates the thin flimsy diminutive labrum, the thickened anterior capsule, and the large pouch of sleeve periosteum of anterior glenoid. The anteroinferior labrum from 2-6 o'clock position is almost completely medially dispaced, likely consequence to repeated trauma. The medial avulsion of the labrum is compatible with an ALPSA lesion (anterior labroligamentous periosteal sleeve avulsion; a.k.a. "medialized Bankart").
A SLAP 2 tear not reaching the biceps anchor complex is seen with evidence of avulsion of the glenoid attachment of inferior glenohumeral ligament (GAHL). These findings were not conspicuous on the non-arthrographic MRI.