ANATOMY
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, Gluteal region
Lies behind pelvis
Extends from Iliac crest to gluteal fold of buttock
Relations to piriformis
Above piriformis
Greater sciatic foramen
Below piriformis pudendal nerve
Lesser sciatic foramen
Obturator internus muscle tendon
Pudendal nerve
Internal pudendal vessels Pass into perineum from gluteal region
Relations of the sciatic nerve
Nerve to quadratus femoris
Posterior cutaneous nerve of the thigh
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