An Unusual Presentation of Subscapularis Tendon Calcific Tendonitis.

Rotator cuff tendons are predisposed to calcific tendonitis and may present in single or multiple tendons. Despite the existence of several treatment strategies that have been proposed, clinical outcomes are controversial. Our study aims to report a case of large subscapularis tendon calcific tendonitis that was refractory to non-operative management and to investigate the clinical presentation, imaging findings, and treatment outcomes.