What Is Lesser Sciatic Notch?

What is lesser sciatic notch?

Lesser sciatic notch is a notch on the posterior of the ischium of the hip bone. It is smooth, is located with cartilage, and has several ridges corresponding to subdivisions of the obturator internus tendon.

It is converted into 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.

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