[15] The posterior rami provide spine muscle and trunk skin sensation. The most complex nerve plexus is the brachial plexus, consisting of cervical nerves 5 through 8 (C5 to C8) and thoracic nerve ...

Brachial plexus injury, affecting nerves controlling the arm, can cause severe pain, numbness, weakness, or paralysis. Early ...

Brachial plexus injuries can be classified in 2 ways: by the degree of nerve injury or by their anatomic location (as in this article). A more complete understanding of the associated anatomy ...