The term Anterior Shoulder instability refers to a shoulder in which soft-tissue or bony insult allows the humeral head to sublux or dislocate from the glenoid fossa. don't confuse between drawer test for knee and this drawer test for the shoulder.
It is an injury to the glenohumeral joint (GHJ) where the humerus is displaced or subluxate from its normal position in the centre of the glenoid fossa and the joint surfaces no longer touch each other.
Procedure
Patient Position: The patient is in a supine position and the affected shoulder over the edge of the table.
limb Position: The patient’s arm should be relaxed. Position the arm in a combined midrange abducted position with forwarding flexion and lateral rotation.
Therapist hand Position: The stabilizing hand is placed on the scapula so that the fingers and thumb secure the scapula at the spine of the scapula and the coracoid.
Then The patient’s arm is pulled anteriorly to apply a gliding force to the glenohumeral joint by the therapist. if an audible click is heard during the movement, the glenoid labrum may be torn, or the joint may be sufficiently lax to allow the humeral head to glide over the glenoid labrum rim.
