During shoulder external rotation in anti-gravity testing, where is resistance applied?

During shoulder external rotation in anti-gravity testing, where is resistance applied?

• A. Downward to the flexor surface of the forearm
• B. Upward on the extensor surface of the forearm
• C. Lateral to the wrist
• D. Toward the patient's body at the shoulder

Answer: (A)

When testing shoulder external rotation against gravity, you apply resistance at the distal forearm on the flexor (anterior) surface, and Direct the force downward. This setup creates a torque that opposes the outward rotation by driving the forearm toward internal rotation, which challenges the external rotators (infraspinatus and teres minor) in the position against gravity. Applying resistance in this anterior, downward direction keeps the resistance aligned with the arc of the motion and minimizes recruitment of unintended muscles or compensations. Other directions or contact sites wouldn’t oppose the external rotation as effectively or could alter the movement pattern, reducing the accuracy of the test.

When testing shoulder external rotation against gravity, you apply resistance at the distal forearm on the flexor (anterior) surface, and Direct the force downward. This setup creates a torque that opposes the outward rotation by driving the forearm toward internal rotation, which challenges the external rotators (infraspinatus and teres minor) in the position against gravity. Applying resistance in this anterior, downward direction keeps the resistance aligned with the arc of the motion and minimizes recruitment of unintended muscles or compensations. Other directions or contact sites wouldn’t oppose the external rotation as effectively or could alter the movement pattern, reducing the accuracy of the test.