Ischial spine

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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.)

Spina ischiadica
Spina ischiaca

Spina ischialis
Gray's p.235
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.


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[edit]

It can serve as a landmark in pudendal anesthesia.[1]

Additional images[edit]


This article incorporates text from a public domain edition of Gray's Anatomy.

External links[edit]