HipandThigh
7
Plate486
SacralandCoccygealPlexuses
Schema
Anterior division
Posterior division
Superior gluteal nerve
Inferior gluteal nerve
Nerve to piriformis
Lumbosacral trunk
Gray rami communicantes
Coccygeal nerve
Anococcygeal nerve
Perineal branch of 4th sacral nerve
Nerve to levator ani and
coccygeus (ischiococcygeus) muscles
Pudendal nerve
Perforating cutaneous nerve
Posterior femoral cutaneous nerve
Nerve to quadratus femoris (and inferior gemellus)
Sciatic nerve
Tibial nerve
(L4, 5, S1, 2, 3)
Common fibular (peroneal)
nerve (L4, 5, S1, 2)
Nerve to obturator internus (and superior gemellus)
Sympathetic trunk
Gray rami communicantes
Pelvic splanchnic
nerves (
cut
)
(parasympathetic
to inferior
hypogastric
[pelvic] plexus)
Sacral
splanchnic
nerves (
cut
)
(sympathetic
to inferior
hypogastric
[pelvic] plexus)
Lumbosacral trunk
Psoas major muscle
Superior gluteal artery and nerve
Obturator nerve
Iliacus muscle
Inferior gluteal artery
Nerve to quadratus femoris
Internal pudendal artery
Nerve to obturator internus
Pudendal nerve
Obturator internus muscle
Superior pubic ramus
Piriformis muscle
Coccygeus (ischiococcygeus) 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])
L4
L5
S1
S2
S3
S4
S5
L5
L4
S1
S2
S3
S4
S5
Co
Nerve to levator ani muscle
See±also±
Plate 262
±
