The sciatic nerve then passes beneath the piriformis muscle, and through the greater sciatic foramen, which is an opening formed by the pelvic bone, sacrospinous and sacrotuberous ligaments.

，坐骨神从下方过梨状肌，并过坐骨大孔；坐骨大孔是由骨盆、带和结节带共同围成的通道。