Shoulder Impingement Syndrome (SIS): Signs and Symptoms



Repetitive Overhead Activity, Scapular Dyskinesis -> Scapulohumeral mechanics become altered -> Narrowing of subacromial space -> Impingement of subacromial bursa, Impingement of underlying rotator cuff (RC) muscle-tendon unit -> Shoulder Impingement Syndrome

+ Painful arc test - Pain at 60-120 with passive shoulder abduction

+ Neer's sign - Passive flexion of the shoulder while stabilizing the scapula reproduces the pain

+ Hawkin's test - Forward flexion of the shoulder to 90, followed by passive internal rotation reproduces pain



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