Brachial Plexus Injury: Types, Causes, Diagnosis, Treatment And Complications What Is Brachial Plexsus? The nerve network known as the brachial plexus gives the shoulder, arm, and hand movement and sensation. The nerves that support the arm leave the spinal column high in the neck, while those that support the hand and fingers leave the spinal column lower in the neck. This nerve complex is made up of the first thoracic nerve root (T1) and four cervical nerve roots (C5–C8). Three trunks are created by the union of these roots. The upper trunk is made up of C5 and C6, the middle trunk is made up of C7, and the lower trunk is made up of C8 and T1. Each trunk separates into a division. Flexor muscles, which lift and bend the arm, is supplies by most of the divisions of brachial plexus whereas the Extensor muscles, which straighten and lower the arm, are supplied by the rest if the divisions. Types Of Brachial Injury Neuropraxia- Stretch of the Brachial Plexus occurs when the nerves a...
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