Sacral and Coccygeal Plexuses Anatomy
Schema: Anterior division, Posterior division, Superior gluteal nerve, Inferior
gluteal nerve, Nerve to piriformis muscle, Lumbosacral trunk, Gray rami
communicantes, Coccygeal nerve, Anococcygeal nerve, Perineal branch of 4th
sacral nerve, Nerve to levator ani and coccygeus muscles, Pudendal nerve, Perforating
cutaneous nerve, Posterior femoral cutaneous nerve, Nerve to quadratus femoris
(and inferior gemellus) muscles, Sciatic nerve, Tibial nerve (L4, 5, S1, 2, 3),
Common fibular nerve (L4, 5, S1, 2),
Nerve to obturator internus (and superior
gemellus) muscles, Sympathetic trunk, Gray rami communicantes, Pelvic
splanchnic nerves (cut) (parasympathetic to inferior hypogastric plexus),
Sacral splanchnic nerves (cut) (sympathetic to inferior hypogastric plexus),
Lumbosacral trunk, Psoas major muscle, Superior gluteal artery and nerve, Obturator
nerve, Iliacus muscle, Inferior gluteal artery, Nerve to quadratus femoris
muscle, Internal pudendal artery, Nerve to obturator internus muscle, Pudendal
nerve, Obturator internus muscle, Superior pubic ramus, Piriformis muscle, Coccygeus
muscle, Levator ani muscle, Topography: medial and slightly anterior view of
hemisected pelvis, Pelvic splanchnic nerves (parasympathetic to inferior
hypogastric [pelvic] plexus [S2, 3, 4]).
