This test is used to determine if there is instability caused by a sprain of the Deltoid ligament of the ankle. The patient is examined in a seated position with his or her knee flexed over the end of the table and foot relaxed non-weight bearing. The examiner grasps the foot and rotates it laterally in the mortise of the ankle. Increased instability compared bilaterally with or without pain is an indication of a positive test. The examiner may also palpate a talar displacement.