Ischial spine
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| Bone: Ischial spine | |
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| Capsule of hip-joint (distended). Posterior aspect. (Spine of ischium labeled at upper left.) | |
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| Left hip-joint, opened by removing the floor of the acetabulum from within the pelvis. (Spine of ischium labeled at center left.) | |
| Latin | s. ischialis s. ischiadica |
| Gray's | subject #57 235 |
From the posterior border of the body of the Ischium there extends backward a thin and pointed triangular eminence, the ischial spine, more or less elongated in different subjects.
It can serve as a landmark in pudendal anesthesia.[1]
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[edit] Surfaces
| external surface | gives attachment to the Gemellus superior |
| internal surface | gives attachment to the Coccygeus, Levator ani, and the pelvic fascia |
| pointed extremity | the sacrospinous ligament is attached. |
[edit] Additional images
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Right hip bone, external surface, showing the greater and lesser sciatic notches, separated by the ischial spine.
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Articulations of pelvis. Anterior view.
[edit] References
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.
[edit] External links
- SUNY Labs 41:os-0105 - "The Female Perineum: Osteology"
- SUNY Labs 44:st-0724 - "The Male Pelvis"
- Ischial+spine at eMedicine Dictionary
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