Ischial spine
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.
| Ischial spine | |
|---|---|
 Capsule of hip-joint (distended). Posterior aspect. (Spine of ischium labeled at upper left.) | |
 Left hip-joint, opened by removing the floor of the acetabulum from within the pelvis. (Spine of ischium labeled at center left.) | |
| Details | |
| Identifiers | |
| Latin | Spina ischiadica Spina ischiaca Spina ischialis |
| TA | A02.5.01.205 |
| FMA | 17028 |
| Anatomical terms of bone | |
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. |
Clinical significance
It can serve as a landmark in pudendal anesthesia.[1]
Additional images
Right hip bone, external surface, showing the greater and lesser sciatic notches, separated by the ischial spine.
Articulations of pelvis. Anterior view.
PELVIS. ANTERIOR VIEW.
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References
This article incorporates text in the public domain from page 235 of the 20th edition of Gray's Anatomy (1918)
- "Clinical Case - Perineum & External Genitalia". Archived from the original on 2011-07-17. Retrieved 2009-05-27.
External links
- Anatomy photo:41:os-0105 at the SUNY Downstate Medical Center - "The Female Perineum: Osteology"
- Anatomy photo:44:st-0724 at the SUNY Downstate Medical Center - "The Male Pelvis"
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