Shoulder Assessment Series Part 9: Jobe / Empty Can Test The Jobe or Empty can test is one of the standard tests to assess for Shoulder Assessment Syndrome. You would expect it to be positive with (external) subacromial shoulder impingement syndrome and negative with internal posteriosuperior glenoid impingement according to Cools et al. (2008). The test is also used to assess a lesion of the supraspinatus tendon together with the Full Can Test. | Physiotutors