Princeton's WordNet(4.75 / 4 votes)Rate this definition: 1  light, illumination(noun) a condition of spiritual awareness; divine illumination. 2  illumination(noun) the degree of visibility of your environment. 3  clarification, elucidation, illumination(noun) an interpretation that removes obstacles to understanding.
The injection for a brachial plexus block is in the. side of your neck, or in your armpit, or close to your collar bone. Other. nerves can be blocked near the elbow, or in the forearm, wrist or hand. Sedation is commonly given before the injection is done.
Frequently asked questions. What is a facet block or medial branch block? A facet block is an injection of local anesthetic and steroid into a joint in the spine. A medial branch block is similar but the medication is placed outside the joint space near the nerve that supplies the joint called the medial branch (steroid may or may not be used).