Posterior inferior iliac spine

Posterior inferior iliac spine
	Right hip bone. External surface. (Posterior inferior spine labeled at center left.)
Details
Identifiers
Latin	spina iliaca posterior inferior
TA	A02.5.01.114
FMA	63615
	Anatomical terms of bone

The posterior inferior iliac spine is an anatomical landmark 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. 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

The posterior aspect of the rectum exposed by removing the lower part of the sacrum and the coccyx.

gollark: THERE IS NO FLAG REGISTER

gollark: I like it, makes sense.

gollark: So branch if equal/less than/not equal/etc?

gollark: Although there's room to specify two registers, so hmm.

gollark: Maybe TIS-style JEZ/JGZ/whatever but with specified registers.

References

This article incorporates text in the public domain from page 234 of the 20th edition of Gray's Anatomy (1918)

External links

Anatomy photo:17:os-0108 at the SUNY Downstate Medical Center
Anatomy photo:43:st-0212 at the SUNY Downstate Medical Center

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