The purpose of this study was to examine the presence of a connection between the dura mater and the posterior wall of spinal canal at the level of C1-C2 and to examine its course and composition.Gross dissection was performed on the suboccipital regions inl0 cadavers.Ten head-neck specimens were sliced having been treated with the P45 plastination method.Within all 10 specimens a dense fibrous band was clearly identified in the nuchal ligament.It arose from the tissue of the posterior border of the nuchal ligament and then proiected anterosuperiorly to enter the atlantoaxial interspace.