Does an x-ray or other test determined whether or not a facet joint is causing pain?
X-rays do not determine whether a facet joint is causing pain. However, x-rays may point out abnormalities such as osteoarthritis that may be significant in causing pain. A series of diagnostic blocks with local anesthetic are the only way to reliably determine whether in fact the facet joints are a source of pain. What is a facet joint block? A facet joint block involves the injection of a substance into or next to the facet joint. Typically, in a diagnostic block, local anesthetic is used. A corticosteroid may also be injected. Radiographic control is mandatory in accurately and safely placing the needle. The purpose of facet joint blocks is twofold. Initially, it is a diagnostic block. If the patient receives 50% or greater pain relief after the injection, there is an increased likelihood that the facet joint is important in the patients pain syndrome. The block is then repeated to confirm the diagnosis. The second purpose of the facet block is to reduce pain. Corticosteroids can he
