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.
随后,经从下方经过梨状肌,并过大孔;大孔是、骶棘韧带和骶结节韧带共同围成的通道。
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