1825
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Lesser sciatic foramen

One of two foramina on each side of the pelvis that are formed by the hip bone, the sacrospinous ligament, and the sacrotuberous ligament and that form a passage from the pelvis to the gluteal and peroneal region, the one giving passage to the tendon of the obturator internus muscle and its nerve, to the internal pudendal artery and veins, and to the pudendal nerve.
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