The posterior inferior iliac spine (Sweeney's Tubercle) is an
anatomical landmark
Anatomical terminology is a form of scientific terminology used by anatomists, zoologists, and health professionals such as doctors.
Anatomical terminology uses many unique terms, suffixes, and prefixes deriving from Ancient Greek and Latin. ...
that describes a bony "spine", or projection, at the
posterior and inferior surface of the
iliac bone.
It is one of two such spines on the posterior surface, the other being the
posterior superior iliac spine
The posterior border of the ala, shorter than the anterior, also presents two projections separated by a notch, the posterior superior iliac spine and the posterior inferior iliac spine. The posterior superior iliac spine serves for the attachme ...
. These two spines are separated by a bony notch. They appear as two dimples in the skin, at the level of the lower back.
The posterior inferior iliac spine corresponds with the posterior extremity of the auricular surface.
Additional images
File:Gray1077.png, The posterior aspect of the rectum exposed by removing the lower part of the sacrum and the coccyx.
References
External links
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Bones of the pelvis
Ilium (bone)
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