Sacrum.
Basis ossis sacri | Promontorium | Ala ossis sacri | Processus articularis superior | Pars lateralis | Facies auricularis | Tuberositas ossis sacri | Facies pelvica | Lineae transversae | Foramina intervertebralia | Foramina sacralia anteriora | Facies dorsalis | Crista sacralis mediana | Foramina sacralia posteriora | Crista sacralis medialis | Crista sacralis lateralis | Cornu sacrale | Canalis sacralis | Hiatus sacralis | Apex ossis sacri (apex ossis sacralis)