EMPTY CAN FOR SUBACROMIAL PAIN SYNDROME AND ISOLATED SUPRASPINATUS TESTING? The empty can (EC) test have been promoted as being able to isolate activity to supraspinatus and are therefore diagnostic of supraspinatus dysfunction. However, Boettcher et al. (2009) examined the EMG activity of 13 muscles in 15 normal subjects and found that the EC test also equally activated nine other shoulder muscles: On the other hand, Jain et al. (2017) have evaluated this test with the goal of diagnosing rotato

LATEST UPLOADS 3/20: WHY 'CAN TESTS SUCK' - AND A BETTER ALTERNATIVE TO TEST THE ROTATOR CUFF MUSCLES Nearly all of us have learned the 'empty can' (EC) and 'full can' (FC) in order to selectively test the supraspinatus. But are those tests actually able to isolate the supraspinatus muscle that well? Boettcher et al. (2009) examined the EMG activity of 13 muscles in 15 normal subjects and found that the EC test also equally activated nine other shoulder muscles "It was concluded from these resul