Shoulder ultrasound is mainly used to assess the pathology and damage within the tendons of the muscles - most often the tendons of the supraspinatus, which is part of the so-called the rotator cuff. Thanks to the ultrasound examination of the shoulder, it is also possible to diagnose pathologies related to the remaining tendons of the shoulder muscles, features of degenerative changes, inflammation of the synovial bursa and general joint inflammation, e.g. in the course of systemic diseases such as RA.