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.

Oct 23, 2025 · The sacrum is a single bone made from five fused vertebrae that connects the spine to the pelvis. It supports the body's core, especially when sitting or standing, and helps …

Nov 6, 2025 · Written by Lorenzo Crumbie. The sacrum is a large, triangular bone at the terminal end of the vertebral column. It forms the posterior wall of the pelvis and plays a key role in …

Jun 3, 2025 · The sacrum is a triangular bone formed by the fusion of five sacral vertebrae, located between the lumbar spine and the coccyx. It articulates with the pelvis at the sacroiliac …

Aug 16, 2025 · The sacrum is a triangular-shaped bone located at the base of the spine, playing a fundamental role in the human skeletal system. It is a central component of the pelvis, …

Nov 1, 2024 · It transmits the total body weight between the lower appendicular skeleton and the axial skeleton. The sacrum is an irregularly shaped bone, shaped roughly like an inverted …

Sep 12, 2025 · The sacrum is a triangular, wedge-shaped bone formed by the fusion of five sacral vertebrae and positioned between the lumbar spine and the coccyx. It forms the posterior wall …

6 days ago · The sacrum is a large wedge shaped vertebra at the inferior end of the spine. It forms the solid base of the spinal column where it intersects with the hip bones to form the pelvis.

Unlike the individual vertebrae in other regions of the spine, the vertebrae in the sacral region as well as the coccyx are fused. Ligaments attach the coccyx to the sacral hiatus at the synovial …

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 …