The brachial plexus is a network of nerves that originate near the neck and shoulder. These nerves begin at the spinal cord in the neck and control the hand, wrist, elbow, and shoulder.

Functional MRI of cortical activity. Diagnosis. Complete brachial plexus (C5–T1) avulsion from the spinal cord. Management. Spinal cord surgery to restore motor trajectories. A 9-year-old boy ...