Definition:
'Shoulder impingement syndrome', also called 'painful arc syndrome', 'supraspinatus syndrome', 'swimmer's shoulder', and 'thrower's shoulder', is a clinical syndrome which occurs when the tendons of the rotator cuff muscles become irritated and inflamed as they pass through the subacromial space, the passage beneath the acromion. This can result in pain, weakness and loss of movement at the shoulder.
