The ischial spine is part of the posterior border of the body of the ischium bone of the pelvis. It is a thin and pointed triangular eminence, more or less elongated in different subjects.
Ischial spine | |
---|---|
Details | |
Identifiers | |
Latin | spina ischiadica spina ischiaca spina ischialis |
TA98 | A02.5.01.205 |
TA2 | 1343 |
FMA | 17028 |
Anatomical terms of bone [edit on Wikidata] |
Part | Attachment |
---|---|
external surface | gemellus superior muscle[1] |
internal surface | coccygeus muscle,[2] levator ani muscle, pelvic fascia |
pointed extremity | sacrospinous ligament |
The pudendal nerve travels close to the ischial spine.[3]
The ischial spine can serve as a landmark in pudendal anesthesia, as the pudendal nerve lies close to the ischial spine.[3][4]
This article incorporates text in the public domain from page 235 of the 20th edition of Gray's Anatomy (1918)