lesser sciatic foramen การใช้

It crosses over the lateral part of the sacrospinous ligament and reenters the pelvis through the lesser sciatic foramen.
The pudendal nerve enters the pelvis through the lesser sciatic foramen and continues medial to the internal pudendal artery.
It is converted into a foramen, the lesser sciatic foramen, by the sacrotuberous and sacrospinous ligaments, and transmits the tendon of the Obturator internus, the nerve which supplies that muscle, and the internal pudendal vessels and pudendal nerve.
The fibers converge rapidly toward the lesser sciatic foramen, and end in four or five tendinous bands, which are found on the deep surface of the muscle; these bands are reflected at a right angle over the grooved surface of the ischium between its spine and tuberosity.
As the tendon of the Obturator internus emerges from the lesser sciatic foramen it is overlapped both above and below by the two Gemelli, which form a muscular canal for it; near its insertion the Gemelli pass in front of the tendon and form a groove in which it lies.