Facet Injection, Medial Branch Block (Lumbar, Thoracic, Cervical)
Medial branch blocks are performed as part of a diagnostic approach to chronic back pain. Medial branch nerves are very small nerve branches that carry pain messages from facet joints to the brain where they are experienced. The facet joints are small joints in the back of the spine that form connections between each vertebra. If these nerves are blocked or numbed, they will not be able to transfer the painful sensation from the joints to the brain. If a patient experiences pain relief when an anesthetic is injected into the nerves of the facet joint, the joint can be confirmed to be the source of the pain.