Synergists of the Elbow

Question 1

Elbow Flexion

Answer 1

1. Biceps brachii (Primary in full supination)
   
   2. Brachialis (Primary in full supination)
   3. Brachioradialis (Primary at 1/2 – thumbs up)
   4. Flexor carpi radialis (assists)
   5. Flexor carpi ulnaris (assists)
   6. Palmaris longus (assists)
   7. Pronator teres (assists)
   8. Extensor carpi radialis longus (assists)*
   9. Extensor carpi radialis brevis (assists)*

Question 2

Elbow Extension

Answer 2

1. Triceps brachii (all heads) (Primary)

2. Anconeus

Question 3

Forearm Supination

Answer 3

1. Bices brachii (Primary Mover)
   
   2. Supinator
   3. Brachioradialis (assists)

Question 4

Forearm Pronation

Answer 4

1. Pronator teres
   
   2. Pronator quadratus
   3. Brachioradialis (assists)