Sacrum

The sacrum (os sacrum) is a large, triangular bone at the base of the vertebral column and at the upper and back part of the pelvic cavity, where it is inserted like a wedge between the two hip bones. Its upper part or base articulates with the last lumbar vertebra, its apex with the coccyx. It is curved upon itself and placed very obliquely, its base projecting forward and forming the prominent sacrovertebral angle when articulated with the last lumbar vertebra; its central part is projected backward, so as to give increased capacity to the pelvic cavity. It is concave facing forwards, thus its curvature is considered a kyphosis.

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Vertebral column: The vertebral column (backbone or spine) is a column of vertebrae situated in the dorsal aspect of the abdomen....

Lumbar vertebra: REDIRECT lumbar vertebrae...

Coccyx: The coccyx (Latin: os coccygis), commonly referred to as the tailbone, is the final segment of the human vertebral column, of three to five (usually four) fused vertebrae (the coccygeal vertebrae), below the sacrum. It is attached to the sacrum in a fibrocartilaginous joint, which permits limited mo...

Sacrum related Images and Photos (experimental)

The Blood of Fish Published in "Ver Sacrum" Magazine 1898