A line drawn from the midline, dorsal surface of the anterior Foramen Magnum to the ventral (anterior) tip of the dens. If the length of this lines exceeds 12 mm then an occipitalcervical dissociation is suggested.
A line drawn from the midline, dorsal surface of the anterior Foramen Magnum to the ventral (anterior) tip of the dens. If the length of this lines exceeds 12 mm then an occipitalcervical dissociation is suggested.