The lift-off sign test BEST assesses which rotator cuff muscle?

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Multiple Choice

The lift-off sign test BEST assesses which rotator cuff muscle?

Explanation:
The lift-off sign specifically tests the subscapularis. In this maneuver the patient places the back of the hand on the lower back and tries to lift it away from the back against your resistance. This requires the subscapularis to contract powerfully to internally rotate and stabilize the humerus and scapula. If the patient cannot lift off or maintain the position, it suggests weakness or a tear of the subscapularis. Other rotator cuff muscles are evaluated with different tests: the supraspinatus is checked with tests that probe initiation of abduction (like the empty-can/full-can tests), while the infraspinatus and teres minor are assessed with resisted external rotation.

The lift-off sign specifically tests the subscapularis. In this maneuver the patient places the back of the hand on the lower back and tries to lift it away from the back against your resistance. This requires the subscapularis to contract powerfully to internally rotate and stabilize the humerus and scapula. If the patient cannot lift off or maintain the position, it suggests weakness or a tear of the subscapularis.

Other rotator cuff muscles are evaluated with different tests: the supraspinatus is checked with tests that probe initiation of abduction (like the empty-can/full-can tests), while the infraspinatus and teres minor are assessed with resisted external rotation.

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