posterior interosseous (antebrachial) nerve

Origin

• radial nerve in cubital region

Innervation

• supinator
• forearm extensors

Course

• arises from the radial nerve in the cubital region of the elbow, penetrates & innervates the supinator & courses with the posterior interosseous artery to supply all of the extensors in the forearm

More general terms

• peripheral nerve

Additional terms

• radial nerve