hi matija sorry for whate happened to you..i have almost the same problem..each one is giving me different diagnosis and my Wikipedia reference-linkMRI showes partial tear in supraspinatus
and massive edema reaching bone marrow and another dr said MRI report is not accurate ..?? i take cortisone injection in subacromian bursa still i have the pain on off i cant do my work and my ADL affected i started physiotherapy doing streaching for supraspinatus and biceps and pecs major with strengthening exercises for Wikipedia reference-linkrotator cuff and median nerve strech..i felt better than befor..and i am working on my posture too which is helping too..