Objectives: The aim of the study is to examine the influence of the morphology of the calcium deposits on pain and function of the shoulder in patients with the calcific tendinopathy of the rotator cuff. Study Design: Prospective survey. Subjects and Methods Radiological, ultrasound and Doppler parameters of 52 subjects with unilateral calcific tendinopathy were analysed, at the beginning of the study, and one year after inclusion in the study. One of the subjects underwent arthroscopic removal of calcium deposits, and was therefore excluded from the study. A clinical examination of both shoulders and pain estimation using a visual analogue pain scale were performed including the conducting of three functional questionnaires, specifically the Oxford shoulder score, Quick DASH and Constant Shoulder Score. Nonparametric statistics was used, i.e., the Chi-squared test. The agreed level of statistical significance was p<0.05. The results: A statistically significant difference of less than 1% was demonstrated among patients with different morphology of deposits and the level of pain on the VAS scale (2= 30.929; df = 4; p < 0.001). Severe pain (VAS 8-10) occurs most commonly in subjects with fragmented, cloudy deposits, which is consistent with previous published studies. The difference between patients with three different morphologies of deposits on the CSS score is statistically significant at less than 1% (2 = 36.098; df = 6; p < 0.001). The result "Excellent" was most commonly described in cases with arch-shaped deposits (75 %), and the result "Poor" in cases with fragmented, cloudy deposits (73 %). The difference between patients with three different types of deposits measured by the Oxford Shoulder Score is statistically significant at less than 5% (2 = 25.250; df = 6; p< 0.001). Severe disability (score 0-19) occurs most often in patients with fragmented deposits and proper functioning (score 40-48) in patients with arch-shaped deposits (67 %). Quick DASH results show that subjects with fragmented deposits achieve a poorer functional result (F = 7.930; df = 3; p < 0.001). So far, there have been no published studies focusing on the direct impact of deposit morphology on the functioning of the shoulder. A statistically significant higher grade of the Power Doppler, most commonly grade 2. and grade 3., was found in patients with fragmented deposits (2 = 35.685, df = 9, p < 0.001). Conclusion This research has shown that subjects with fragmented, cloudy deposits achieve statistically significantly worse results on functional questionnaires, experience stronger pain and have higher Power Doppler grades.