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


external surfacegives attachment to the Gemellus superior
internal surfacegives attachment to the Coccygeus, Levator ani, and the pelvic fascia
pointed extremitythe 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 page 235 of the 20th edition of Gray's Anatomy (1918)

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