What It Is: A medial branch nerve block is a diagnostic and therapeutic procedure that involves injecting an anesthetic near the nerves that supply the facet joints in the spine. These joints are located between and behind adjacent vertebrae. The medial branch nerves carry pain signals from the facet joints to the brain.

How It Will Help: This procedure is primarily used to determine if the facet joints are the source of your back pain. If the injection relieves your pain, it confirms that the facet joints are indeed the source. Additionally, the relief from pain can allow you to participate more effectively in physical therapy and daily activities.

Why It Is Safe: Medial branch blocks are considered safe and have a low risk of complications. They are performed using imaging guidance, such as fluoroscopy, to ensure accurate placement of the needle, minimizing the risk of injury to other structures. The use of local anesthetics and sometimes corticosteroids helps reduce inflammation and provides pain relief with minimal side effects.