SACRUM
The sacrum is shaped like a quadrangular pyramid with the base facing up and the apex facing down. It articulates superiorly with the 5th Lumbar Vertebra and inferiorly with the Coccyx.
The sacrum is the fusion of five vertebrae and has 4 faces: two lateral, one anterior and one posterior.
Side Faces
The main accident of the lateral faces is the Ear Faces that serve as the point of articulation with the hip bone (iliac).
Anterior Face (Iliac)
It is concave and has four transverse ridges, which correspond to intervertebral discs. It has four anterior sacral foramina.
Posterior Face (Dorsal)
It is convex and has the following bone accidents:
Median Sacral Crest & #8211; presents three or four spinous processes.
Base
Apex
Articulates with the coccyx.
SACRO & #8211; PREVIOUS VIEW |
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Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000. |
SACRO & #8211; BACK VIEW |
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Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000. |
SACRO & #8211; SIDE VIEW |
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Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000. |
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