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.
后,坐骨神从下方过梨状肌,并过坐骨大孔;坐骨大孔是由骨盆、骶和骶结节共同围成的通道。
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