Brachial plexus avulsion refers to the complete tearing or detachment of the roots or branches of the nerve network known as the brachial plexus due to forceful trauma. The brachial plexus is a nerve network located between the neck and shoulder, responsible for the movement and sensation of the shoulder, arm, and hand.

This condition typically results from trauma, where avulsion entails the complete separation of nerve roots or branches from the spinal cord, leading to the loss of nerve function. In cases of brachial plexus avulsion, individuals may experience symptoms such as weakness, paralysis, numbness, pain, or loss of sensation in the affected arm and hand. Diagnosis is usually made through medical evaluation, physical examination, magnetic resonance imaging (MRI), and electromyography (EMG).

For pain associated with brachial plexus avulsion, the initial treatment option is usually pain relievers. In cases where these are insufficient, spinal cord stimulators (SCS), also known as spinal cord implants, can be used.