how to measure external rotation
What it tests. The amount of shoulder external rotation, assessing the capsule and joint (to allow passive motion) and the posterior cuff (to power active motion) How to do it. Stand in front of the patient. Ask them to keep their elbow at the side and point their hand at you (in gunslinger pose). Have the elbow flexed at 90. Ask the patient to externally rotate the hand as far as possible with the elbow held against the trunk. Repeat this assessment with passive motion and compare.