Test of putting hand over shoulder:
It is also called Dugas’s Sign. The patient flexes his elbow of the sick side with the hand over his opposite shoulder. Normally the elbow can touch the chest. If the elbow can not touch the chest, or the hand can not put over the shoulder as the elbow touches the chest, or neither can be done, it is positive, indicating dislocation of shoulder joint.

Straightedge test:
Normally the acromion is in the medial side of the line connecting lateral epicondyle of humerus with greater tuberosity of humerus. Put the straightedge on the lateral side of the upper arm with the lower end of the straightedge near the lateral epicondyle. If the upper end of the straightedge touches the acromion, it is positive, indicating dislocation of shoulder joint.

Test of pain arc of shoulder:
Within the range of 60° to 120° in shoulder abduction, if there appears pain in shoulder because of rubbing between supraspinatus tendon and inferior part of acromion, it is positive. This pain in special area is called pain arc, and seen in tendinitis of supraspinatus muscle.

Rupture test of supraspinatus tendon:
Within the ranges of 30° to 60° in shoulder abduction, the deltoid muscle contracts strongly, but the upper arm can not abduct, and the more exertion, the more shrug of the shoulder. But above the range through a passive abduction, the patient can actively raise his upper arm. The disturbance of active abduction in the first range is positive reaction, and usually seen in rupture of supraspinatus tendon.
     
Test of resistance of tendon of brachial biceps:
Let the patient bend his elbow and do supination of forearm against resistance, if there occurs pain of intertubercular groove of humerus, it is positive and often seen in tenosynovitis of long head of biceps brachii.