Biceps tendon rupture with a retracted proximal biceps tendon effusion (fig. 1) and empty bicipital groove (fig. 2)
Note, that the intertubercubercular sulcus is empty, only the glenohumeral ligaments can be seen.
The bony surface of the sulcus looks more irregular and osteophytic, suggesting that the previous tendinopathy played important role in the recent injury.