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Ischial spine

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Title: Ischial spine  
Author: World Heritage Encyclopedia
Language: English
Subject: Greater sciatic notch, Ischium, Sacrospinous ligament, Lesser sciatic foramen, Pudendal nerve entrapment
Collection: Bones of the Pelvis, Ischium
Publisher: World Heritage Encyclopedia

Ischial spine

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.)
Latin Spina ischiadica
Spina ischiaca
Spina ischialis
Anatomical terms of bone

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.


  • Surfaces 1
  • Clinical Significance 2
  • Additional images 3
  • References 4
  • External links 5


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


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

  1. ^ "Clinical Case - Perineum & External Genitalia". 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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