The sacral region (sacrum) is at the bottom of the spine and lies between the fifth segment of the lumbar spine (L5) and the coccyx (tailbone). The sacrum is a triangular-shaped bone and consists of five segments (S1-S5) that are fused together. advertisement. Sacral Spine Diagram - Chart - diagrams and charts with labels. This diagram depicts Sacral Spine and explains the details of Sacral Spine.
Sacral Spine
