Greater sciatic foramen
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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 sacroiliac ligament.
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Function
The piriformis, which exits the pelvis through the foramen, occupies most of its volume.
The following structures also exit the pelvis through the greater sciatic foramen:
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