How is elbow flexor strength tested?

How is elbow flexor strength tested?

• A. Forearm in neutral; perform elbow flexion against resistance at the distal forearm, with stabilization of the upper arm.
• B. Forearm in pronation; perform elbow flexion against resistance at the distal forearm, with stabilization of the upper arm.
• C. Forearm in supination; perform elbow flexion against resistance at the distal forearm, with stabilization of the upper arm.
• D. Forearm in supination; perform elbow extension against resistance at the distal forearm, with stabilization of the upper arm.

Answer: (C)

Testing elbow flexor strength is most effective when the forearm is positioned to bias the biceps brachii, the primary elbow flexor that works best with forearm supination. Placing the forearm in supination and applying resistance at the distal forearm while stabilizing the upper arm ensures the movement comes from elbow flexion and specifically challenges the elbow flexor group, notably the biceps. If the forearm were neutral, brachioradialis would contribute more to the movement; if it were pronated, the brachialis would be emphasized; and testing with the forearm in supination but asking for elbow extension would measure elbow extensors, not flexors.

Testing elbow flexor strength is most effective when the forearm is positioned to bias the biceps brachii, the primary elbow flexor that works best with forearm supination. Placing the forearm in supination and applying resistance at the distal forearm while stabilizing the upper arm ensures the movement comes from elbow flexion and specifically challenges the elbow flexor group, notably the biceps. If the forearm were neutral, brachioradialis would contribute more to the movement; if it were pronated, the brachialis would be emphasized; and testing with the forearm in supination but asking for elbow extension would measure elbow extensors, not flexors.