(vertebrae sacrales)
(os sacrum)
(cavitas pelvis)
(basis ossis sacri)
(apex ossis sacri)
(pars lateralis)
(promontorium)
(facies pelvina)
(lineae transversae)
(foramina sacralia pelvina)
(crista sacralis mediana)
(cristae sacrales intermediae)
(cristae sacrales laterales)