Crank test is a shoulder examination used to determine the integrity of the glenoid labrum.
- Patient seated with shuolder abducted ~180° & elbow flexed 90°; examiner applies long axis compression & rotates humerus internally & externally.
Positive Shoulder pain & crepitis (grinding & popping) → glenoid labral lesion.
90% sensivity & 98% specificity in stable shoulders.
90% sensivity & 85% specicicity in unstable shoulders.