Sacrum: Anatomy, Function, and Associated Conditions - Verywell Health
Oct 11, 2023 · The sacrum is an irregular bone that makes up the back or posterior third of the pelvic girdle. A ridge across the front or anterior portion of the S1 vertebra is called the sacral promontory.
Sacrum - Wikipedia
At each end of the transverse ridges, are the four anterior sacral foramina, diminishing in size in line with the smaller vertebral bodies. The foramina give exit to the anterior divisions of the sacral nerves and entrance to the lateral sacral arteries. Each part at the sides of the foramina is traversed by four broad, shallow grooves, which ...
Sacrum - Anatomy, Location, Functions, & Labeled Diagram
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 base of the vertebral column or spine.
Sacrum: Anatomy and clinical aspects - Kenhub
Oct 30, 2023 · The weight-bearing sacroiliac joint complex is supported and secured by three ligaments, namely the anterior, interosseous and posterior sacroiliac ligaments. The interosseous sacroiliac ligament constitutes the major bond between the ilium and sacrum, filling the gaps between these two bones at the posterosuperior aspect of the joint.
The Sacrum - Landmarks - Surfaces - Relations - TeachMeAnatomy
Sep 2, 2024 · Both the anterior and posterior surfaces of the sacrum serve as points of origin or attachment for several lower limb and back muscles. They can be divided into the those that are associated with the anterior surface, and those associated with the posterior surface.
Sacrum - Anatomy, Location, Functions, & Labeled Diagram
Dec 12, 2023 · Anteriorly, there is an anterior bony projection known as the sacral promontory, marking the posterior margin of the pelvic inlet and continuous with the margin of the sacral ala. The front sides of the four pairs of sacral foramina are found on this surface.
Sacrum - Physiopedia
The anterior aspect of the sacrum is less coarse than the posterior aspect. Once the fusion of the sacral vertebrae is complete, four transverse ridges can be appreciated. These ridges represent the remnants of the fused intervertebral discs.
Sacrum (Sacral Region) - Spine-health
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.
Sacrum | Encyclopedia | Anatomy.app | Learn anatomy | 3D …
The sacrum (Latin: os sacrum), also known as the sacral bone, is a triangular-shaped bone located at the base of the spine. It is formed by five sacral vertebrae (S1 - S5) that fuse with each other between ages 18 and 30.
Sacrum and Coccyx Anatomy - GetBodySmart
Nov 2, 2022 · Anterior sacral foramina (foramina sacralia anteriora) are four pairs of openings located lateral to the fused sacral bodies. The foramina are arranged in two vertical rows and communicate with the sarcal canal. They give passage to the anterior primary branches (rami) of the sacral nerves and lateral sacral arteries and veins.