Posterior Cord

The posterior cord is a part of the brachial plexus. It consists of contributions from all of the roots of the brachial plexus.

The posterior cord gives rise to the following nerves:

Name Roots Supplies
upper subscapular nerve C5-C6 subscapularis muscle of the rotator cuff
lower subscapular nerve C5-C6 teres major
thoracodorsal nerve C6-C8 latissimus dorsi muscle
axillary nerve C5-C6 sensation to the shoulder and motor to the deltoid muscle, the teres minor and the triceps brachii (long head) muscle
radial nerve C5-C8, T1 triceps brachii muscle, the brachioradialis muscle, the extensor muscles of the fingers and wrist (extensor carpi radialis muscle), supinator, and the extensor and abductor muscles of the thumb

Read more about Posterior Cord:  Additional Images

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