We present the case of an old patient with a painful shoulder, diagnosed in the ambulatory practice with an impingement syndrome and supraspinatus thendinopathy, with no response to appropriate therapeutically approach. As the MRI and diagnostic arthroscopy were not suitable for this patient, the sonographic examination changes the diagnosis to a supraspinatus complete tear with glenohumeral reaction and oriented the therapy, which proved to be successful.
Keywords: shoulder pain; sonography; supraspinatus tendon.