Nuchal ligament Last edited and medically reviewed by Alaric Steinmetz on 13.11.2023 Synonyms Nackenband The nuchal ligament is a ligament of the Spine.AnatomyThe nuchal ligament extends from the Protuberantia occipitalis externaLigamenta interspinaliaLigamentum supraspinaleFunctionThe nuchal ligament limits flexion of the cervical spine[^2].Figure Enlarge Anatomical drawing highlighting the ligamentum nuchae (marked in red). Figure adapted from Gray's Anatomy.