Denticulate ligament Last edited and medically reviewed by Alaric Steinmetz on 10.08.2024 The denticulate ligament serves to suspend the spinal cord within the dural sac.AnatomyThe denticulate ligament runs between the anterior and posterior spinal nerve roots. The Nervus accessoriusFigure Enlarge Schematic illustration of the ligamentum denticulatum. Image adapted from Gray’s Anatomy.