Greater sciatic foramen

The greater sciatic foramen is a major foramen of the human pelvis.

Structure
It is bounded as follows:
 * anterolaterally by the greater sciatic notch of the ilium
 * posteromedially by the sacrotuberous ligament
 * inferiorly by the sacrospinous ligament and the ischial spine
 * superiorly by the anterior sacroilliac ligament

Function
The piriformis, which exits the pelvis through the Greater sciatic foramen, occupies most of the foramen.

The following structures also make their exit from the pelvis through the greater sciatic foramen:

The structures contained within the foramen are represented by a mnemnoic.