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

Figure 5

A photograph showing the nerve branch for the extensor carpi radialis brevis (ECRB) and the nerve branch from the deep branch of the posterior interosseous nerve (PIN) to innervate the extensor digitorum (ED). ECRL: extensor carpi radialis longus; ECU: extensor carpi ulnaris; asterisk: supinator.