Subacromial impingement syndrome (SAIS) is a disorder of shoulder that `accounts for 44–65% of all complaints of shoulder pain. It encompasses a spectrum of subacromial space pathologies that includes partial thickness rotator cuff tears, rotator cuff tendinosis, calcific tendinitis, and subacromial bursitis. This article evaluates the different etiological theories that may explain SAIS. Subacromial impingement syndrome (SAIS) represents a spectrum of pathology ranging from subacromial bursitis to rotator cuff tendinopathy and full-thickness rotator cuff tears.
However, the etiology is multi-factorial, and it has been attributed to both extrinsic and intrinsic mechanisms. Management includes physical therapy, injections, and surgery for some patients. Anatomical factors Anatomical factors may excessively narrow the subacromial space and outlet to the Rotator Cuff (RC) tendons that…
