Sciatic Notches (other)
Sciatic notch may refer to : * Greater sciatic notch * Lesser sciatic notch Below the ischial spine is a small notch, the lesser sciatic notch; it is smooth, coated in the recent state with cartilage, the surface of which presents two or three ridges corresponding to the subdivisions of the tendon of the Obturator internu ... {{disambig ...
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Greater Sciatic Notch
The greater sciatic notch is a notch in the ilium (bone), ilium, one of the bones that make up the human pelvis. It lies between the posterior inferior iliac spine (above), and the ischial spine (below). The sacrospinous ligament changes this notch into an opening, the greater sciatic foramen. The notch holds the piriformis, the superior gluteal vein and superior gluteal artery, artery, and the superior gluteal nerve; the inferior gluteal vein and inferior gluteal artery, artery and the inferior gluteal nerve; the sciatic and posterior femoral cutaneous nerves; the internal pudendal artery and internal pudendal veins, veins, and the nerves to the internal obturator and quadratus femoris muscles. Of these, the superior gluteal vessels and nerve pass out above the piriformis, and the other structures below it. The greater sciatic notch is wider in women (about 74.4 Degree symbol, degrees on average) than in men (about 50.4 degrees).
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