Sacrum anatomy

sacrum  The sacrum articulates with four bones; the last lumbar vertebra above via a disc space and facet joint complex, the coccyx below with a ligamentous attachment Sacrum is a triangular bone composed of five fused segments present just below the lumbar vertebrae Coccyx is a rudimentary bone composed of three to five

The sacrum is a large bone located at the terminal part of the vertebral canal, where it forms the posterior aspect of the pelvis  The sacrum is a large bone located at the terminal part of the vertebral canal, where it forms the posterior aspect of the pelvis

The Sacrum Armamentarium by Andronikos Kamateros is one of the most important and voluminous remaining Byzantine inedita from the 12th century Written for Sacrum definition: a bone resulting from the fusion of two or more vertebrae between the lumbar and the coccygeal regions, in humans being composed usually