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 with balance …

Apr 13, 2017 · The sacrum is a portion of the lower spine that extends into the tailbone. This bone has many different muscles attached to it that may be the origin of sacrum pain associated with postural...

Nov 6, 2025 · 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 weight transmission from the axial skeleton to …

The sacrum is a triangular-shaped bone that forms the foundation of the spine, connecting it to the pelvis. The sacral vertebrae, sacral hiatus, and sacral foramina are essential anatomical features that …

The sacrum is a large, triangular bone situated at the base of the spine, positioned like a shield at the back of the pelvis. This wedge-shaped structure is composed of five individual vertebrae that fuse …

2 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.

Oct 30, 2023 · Regarded as the keystone of the human body, the sacrum is important because it forms a link between the spine and the iliac bones, and also has an important part to play in hip stability.

Nov 25, 2024 · Let’s start with a quick anatomy lesson: According to Russell DeMicco, D.O., the associate director of the Cleveland Clinic Center for Spine Health in Ohio, “the sacrum is a triangular …

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 joints, playing …