The sacrum (pl.: sacra or sacrums[1]), in human anatomy, is a triangular bone at the base of the spine that forms by the fusing of the sacral vertebrae (S1–S5) between ages 18 and 30.

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 …

Nov 6, 2025 · Clear and detailed guide to sacrum anatomy for medical students and healthcare professionals. Covers bony landmarks, surfaces, muscle attachments, neurovascular …

Mar 20, 2024 · It is situated just above the buttocks and at the base of the spine inferior to the vertebral region. Specifically, the sacral region comprises a triangular area that overlies the …

Oct 23, 2025 · The sacrum is a fusion of five vertebrae that holds the pelvis and spinal column together. It is important for motion, strength, and balance. Learn more about it and conditions …

Aug 18, 2025 · The sacral area is located at the very bottom of the spine, directly above the tailbone. This triangular-shaped region is positioned between the two large hip bones at the …

Jun 3, 2025 · This article provides a detailed exploration of the sacrum and coccyx’s anatomy, physical characteristics, and functional roles, offering a comprehensive guide to their …

Learn about sacrum anatomy and its role in your lower spine. Discover how this triangular bone supports the pelvis, links to the spine, and contributes to stability and movement.

Dec 27, 2021 · The sacrum is a large, flat, triangular-shaped, irregular bone, alternatively known as the sacral vertebra or sacral spine. It comprises five fused vertebrae (S1-S5), located at the …

The sacrum is a large bone located at the terminal part of the vertebral canal, where it forms the posterior aspect of the pelvis. It is remarkably thick, which aids in supporting and transmitting …