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Posterior inferior iliac spine
Anatomical landmark / From Wikipedia, the free encyclopedia
The posterior inferior iliac spine (Sweeney's Tubercle) is an anatomical landmark that describes a bony "spine", or projection, at the posterior and inferior surface of the iliac bone.
Quick Facts Details, Identifiers ...
Posterior inferior iliac spine | |
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![]() Right hip bone. External surface. (Posterior inferior spine labeled at center left.) | |
Details | |
Identifiers | |
Latin | spina iliaca posterior inferior |
TA98 | A02.5.01.114 |
TA2 | 1330 |
FMA | 63615 |
Anatomical terms of bone |
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It is one of two such spines on the posterior surface, the other being the posterior superior iliac spine. 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.[clarification needed]