Like Stegosaurus, the neural canal was expanded in the hips, but not to the same degree: the endosacral space of Stegosaurus had 20 times the volume of its endocranial cast, whereas the endosacral space of Edmontosaurus was only 2.59 times larger in volume.
Kao i kod Stegosaurusa, nervni kanal se širio kod kukovlja, ali ne do istog stupnja: endosakralni prostor Stegosaurusa je imao 20 puta veću zapreminu endokranijalnog odljevka, dok je endosakralni prostor Edmontosaurusa bio samo 2,59 puta veći u zapremini.