Indications:

Crank test is a shoulder examination used to determine the integrity of the glenoid labrum.

Procedure:

  1. Patient seated with shuolder abducted ~180° & elbow flexed 90°; examiner applies long axis compression & rotates humerus internally & externally.
Crack test for shoulder exam

Patient seated with shoulder abducted ~180° and elbow flexed 90°; examiner applies long axis compression and rotates humerus internally and externally.

Interpretation:

Positive Shoulder pain & crepitis (grinding & popping) → glenoid labral lesion.

Clinical notes:

90% sensivity & 98% specificity in stable shoulders.
90% sensivity & 85% specicicity in unstable shoulders.