What is a medial branch block or facet arthrogram?
Because the facet joints are very small, pain deriving from them cannot be accurately diagnosed by imaging studies or a physical examination. In order to determine if a particular facet joint is painful a series of two fluoroscopically guided diagnostic injections must be performed. This typically involves introducing several small needles next to the nerves innervating the facet joint and anesthetizing them on two separate occasions. The medication may also be placed directly into the facet joints. In rare instances the facet joints may develop cysts and your referring doctor may ask us to drain them. What will happen to me during the procedure? An IV will be started to ensure your safety. You may receive intravenous relation medication but general anesthesia is not used and you will be awake throughout the procedure. You will be positioned face down on the table and the skin over your spine will be well cleaned with iodine or alcohol. The physician will numb a small area of skin with
