Isolated injury to the subscapularis tendon can occur as a result of traumatic injury or chronic degeneration. The injury ranges from small superior tears associated with biceps tendon subluxation to large tears and anterior glenohumeral instability. Tears often begin at the superior insertion where tendon fibers blend with the biceps pulley; medial subluxation of the biceps occurs with loss of this restraint. Tear progression then proceeds inferiorly leading to increasing anterior instability and weakness.

Case courtesy: Dr.ssa Laura Braccaioli

Radiographer: TSRM Fabio Imola