“…Common shoulder problems in overhead athletes include rotator cuff injury (partial and complete tears), instability, secondary impingement, internal impingement, and superior labrum from anterior to posterior lesions [22,23,[28][29][30]. Less common causes of shoulder pain in the overhead athlete include nerve injuries to the suprascapular nerve [13,34], axillary nerve (including quadrilateral space syndrome) [6,15,39], and long thoracic nerve in addition to vascular problems including effort thrombosis of the axillary artery or vein [1,21,24,27,38,41] and thoracic outlet syndrome [7,10,25,35,42]. These neurovascular causes of shoulder pain can be difficult to diagnose and often require special diagnostic tests such as electromyography and arteriography [13,22,34,35].…”