Medial branch nerves provide innervation to the facet joints which are one of the most common sources of spinal pain. A medial branch nerve block procedure consists of placing an anesthetic or anesthetic/anti-inflammatory mixture on the medial branch nerves of the facet joint. The injection can serve both a diagnostic and therapeutic purpose, which means it can identify the source of pain as well as treat the pain. The injection is able to determine what facet joint or medial branch nerve is producing pain. Once the area is determined, an anti-inflammatory medication can be injected to decrease inflammation and irritation caused by nerves. Radiofrequency ablation of the nerves can also be performed to achieve long lasting pain relief.