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UR Medicine / Neurosurgery / Services / Conditions / Brachial Plexus


Brachial Plexus

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What is the brachial plexus?

The brachial plexus is an arrangement of nerve fibers, running from the spine, formed by the ventral rami of the lower four cervical and first thoracic nerve roots (C5-T1). It proceeds through the neck, the axilla (armpit region), and into the arms.