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 |
| TA98 | A02.5.01.205 |
| TA2 | 1343 |
| 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.
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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