BRILLIANT demonstration thank you. only used to do the painful arc to assess rotator cuff impingement but the specific tests for supraspinatus, infraspinatus, teres major are subscapularis help me locate the exact pathology = better marks for Sandy just in addition... pain throughout the painful arc test is attributed to osteoarthritis, pain from 30-180, rotator cuff path and as you correctly said pain at the end is due to AC joint problems. thanx again ciao