The common disease are : 1. Shoulder Infection : 2. Rotator cuff tears : 3. Impingement Syndrome : 4. Rotator cuff arthropathy : 5. Frozen shoulder : 6. Rheumatoid arthritis : 7. Recurrent dislocation : 8. Calcifying supraspinatus tendinitis : 9. Acromioclavicular joint osteoarthritis : 10. Glenohumeral joint osteoarthritis :