The Posterior cord is a division of the brachial plexus.

The posterior cord gives rise to the following nerves:

• The upper subscapular nerve, C7 and C8, to the subscapularis muscle of the rotator cuff.
• The lower subscapular nerve, C5 and C6, to the teres major also of the rotator cuff.
• The thoracodorsal nerve, C6, C7 and C8, to the latissimus dorsi muscle.
• The axillary nerve, which supplies sensation to the shoulder and motor to the deltoid muscle and the teres minor muscle.
• The radial nerve, which innervates the triceps brachii muscle, the brachioradialis muscle, the extensor muscles of the fingers and wrist (extensor carpi radialis muscle), and the extensor and abductor muscles of the thumb. See radial nerve injuries.

External links

• Illustration