Relationship between the Branching Patterns of the Radial Nerve and Supinator Muscle

Figure 7

A photograph showing the posterior interosseous nerve branch (PIN). BR: brachioradialis; ECRL: extensor carpi radialis longus; ECRB: extensor carpi radialis brevis; asterisk: supinator; ED: extensor digitorum; white arrow: superficial branch of the PIN; black arrow: deep branch of the PIN; asterisk: supinator.