What is the brachial plexus? And the peripheral nerve?

The brachial plexus is a network of nerves responsible for the mobility and sensitivity of the upper limb (shoulder, arm, hand); it originates in the spinal cord. Brachial plexus injuries are associated with high-energy accidents, in other words, strong impacts such as a car accident or a sports injury.

In contrast, the peripheral nerve is the part where all the nerves that run from the limb to the root originate, and it is responsible for the connection between the limb and the brain. There are many causes of this injury, such as an accident, an injury, or surgery.

An injury to the brachial plexus and/or peripheral nerve results in reduced mobility of the affected limb and, in most cases, is associated with a high level of pain.