Inclusion Criteria:  symptomatic RCT (VAS pain ≥ 4 + limited shoulder mobility) with D-ultrasound calcification size ≥ 5 mm calcification type I and II according to Chiou HJ et al. disease duration ≥ 2 months  Exclusion Criteria:  asymptomatic RCT or RCT with mild symptoms (VAS pain ≤ 3 + normal shoulder mobility) calcification size < 5 mm, type III and IV calcification according to Chiou HJ et al. duration symptoms less than 2 months rotator cuff tendon rupture adhesive capsulitis application of corticosteroids in the examined shoulder in the previous 3 months glucocorticoid therapy physical shoulder therapy in the previous 6 months shock wave therapy in the previous 12 months prior percutaneous calcification irrigation current cervical or cervicobrachial pain syndrome inflammatory rheumatic disease scapular dyskinesia with positive assisted and repository scapular test subacromial/subdeltoid bursitis recent trauma or malignancy