 For the diagnosis of impingement disease, the best combination of tests were "any degree (of) a positive Hawkins–Kennedy test, a positive painful arc sign, and weakness in external rotation with the arm at the side", to diagnose a full thickness rotator cuff tear, the best combination of tests, when all three are positive, were the painful arc, the drop-arm sign, and weakness in external rotation.Subacromial bursitis often presents with a constellation of symptoms called impingement syndrome.Pain along the front and side of the shoulder is the most common symptom and may cause weakness and stiffness.