The brachial plexus is a network of intertwined nerves that control movement and the sensation in the arm and the hand. This nerve comprises of four cervical nerve roots, thoracic courage root, the central trunk and the lower stem. An injury in brachial plexus can damage these nerves causing weakness, loss of sense and create difficulty in the movement of shoulders, arms or hands. Mild brachial plexus injuries can be treated without any surgical methods but the severe injuries demand immediate attention as they require surgery to make the body parts function properly.