A medial branch block is a diagnostic procedure used to determine whether the facet joints are the source of chronic back or neck pain. Under fluoroscopic guidance, a clinician injects a small amount of anesthetic near the medial branch nerves, which carry pain signals from the joints. If pain relief is significant, it confirms that those nerves are contributing to the symptoms — often leading to the next step, such as radiofrequency ablation (RFA). Quick, precise, and essential for targeting th

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