The spine’s joints are called facet joints. Facet joints are found in the cervical (neck), thoracic (mid back), and lumbar (low back) spine. These joints allow the spine to flex, extend, and rotate. The medial branch nerve innervates the facet joint. Facet joint pain can be secondary to back pain and may radiate into the hips, buttocks, and posterior thighs. We can help you manage pain by injections.