Sacral Bone Anatomy. Shaw House Orchard Road. The sacrum is an irregularly shaped bone made up of a group of five fused vertebrae in the area of what is commonly known as the base of the spine.
Anatomy of the Sacrum The iliac bones are located at the base of the spine. The human sacrum is a large triangular bone originating from five separate vertebra that fuses along with the inter-vening intervertebral discs28 The primary cartilaginous joints between the vertebrae as noted in children involute in adulthood leaving only transverse lines on the ventral aspect of the sacrum. These five vertebral bodies begin to fuse with each other from below upward at about 1 7 -18 years fusion being complete by 23 years.
The sacrum is a triangular bone at the very bottom of the spine formed by five fused vertebrae.
All sacrum parts are fused and thus the sacrum is a single bone. The sacrum is anatomically present between fifth lumbar vertebrae and the coccyx tailbone. The sacrum is a triangular bone composed of five vertebrae that make up the second to last portion of the spine. This sacrum anatomy quiz will test you over the main structures of the sacrum.
