During an elbow flexion MMT, where should stabilization be applied?

During an elbow flexion MMT, where should stabilization be applied?

• A. Stabilize the scapula.
• B. Stabilize the distal forearm.
• C. Stabilize the proximal humerus near the shoulder.
• D. Stabilize the chest.

Answer: (C)

Stabilization in manual muscle testing is about fixing the segment above the joint you’re evaluating so only the targeted joint moves. For elbow flexion, you want the elbow to flex while preventing movement from the shoulder girdle or trunk that could substitute for elbow motion. Stabilizing the proximal part of the upper arm — near the shoulder — fixes the humerus in place, keeping the movement isolated to the elbow flexors (biceps, brachialis, brachioradialis) without shoulder motion contributing to the test. If you stabilized the distal forearm, you would actually block the very segment you’re testing and obscure the elbow movement. Stabilizing the chest or scapula doesn’t directly ensure isolation of the elbow joint. So placing stabilization on the proximal humerus near the shoulder best preserves isolation of elbow flexion.

Stabilization in manual muscle testing is about fixing the segment above the joint you’re evaluating so only the targeted joint moves. For elbow flexion, you want the elbow to flex while preventing movement from the shoulder girdle or trunk that could substitute for elbow motion. Stabilizing the proximal part of the upper arm — near the shoulder — fixes the humerus in place, keeping the movement isolated to the elbow flexors (biceps, brachialis, brachioradialis) without shoulder motion contributing to the test. If you stabilized the distal forearm, you would actually block the very segment you’re testing and obscure the elbow movement. Stabilizing the chest or scapula doesn’t directly ensure isolation of the elbow joint. So placing stabilization on the proximal humerus near the shoulder best preserves isolation of elbow flexion.