<prompt> Most common affected tendon in the Swimmers shoulder?InfraspinatusSupraspinatusTeres minorTeres major  <response>: Swimmers shoulder supraspinatus syndrome Painful arc syndromeShoulder impingement syndrome. Causes of swimmers shoulder: Supraspinatus tendinitis - Most common cause Complete or paial rupture of the rotator cuff Osteoahritis of the acromioclavicular joint 