Superior hypogastric plexus

Superior hypogastric plexus
The right sympathetic chain and its connections with the thoracic, abdominal, and pelvic plexuses. (Hypogastric plexus is labeled on right, fourth from the bottom.)
Lower half of right sympathetic cord.
Details
InnervatesPelvis
Identifiers
Latinplexus hypogastricus superior, nervus presacralis
MeSHD007001
TA98A14.3.03.046
TA26711
FMA6642
Anatomical terms of neuroanatomy

The superior hypogastric plexus (in older texts, hypogastric plexus or presacral nerve) is a plexus of nerves situated on the vertebral bodies anterior to the bifurcation of the abdominal aorta. It bifurcates to form the left and the right hypogastric nerve.[1] The SHP is the continuation of the abdominal aortic plexus.[2]

Structure

Afferents

The superior hypogastric plexus receives contributions from the two lower lumbar splanchnic nerves (L3-L4), which are branches of the chain ganglia. They also contain parasympathetic fibers which arise from pelvic splanchnic nerve (S2-S4) and ascend from inferior hypogastric plexus; it is more usual for these parasympathetic fibers to ascend to the left-handed side of the superior hypogastric plexus and cross the branches of the sigmoid and left colic vessel branches, as these parasympathetic branches are distributed along the branches of the inferior mesenteric artery.[2]

Efferents

From the plexus, sympathetic fibers are carried into the pelvis as two main trunks - the right and left hypogastric nerves - each lying medial to the internal iliac artery and its branches. The right and left hypogastric nerves continues as inferior hypogastric plexus; these hypogastric nerves send sympathetic fibers to the ovarian and ureteric plexuses, which originate within the renal and abdominal aortic sympathetic plexuses.[2]

Relations

The superior hypogastric plexus is often displaced somewhat to the left of the midline. It is situated between the common iliac arteries. It is anterior to the lumbar vertebra L5 and sacral promontory, the aortic bifurcation, and left common iliac vein. It is posterior to the parietal peritoneum (with avascular areolar tissue intervening between these two structures). It is situated near the apex of the attachment of the sigmoid mesocolon.[3]

Clinical significance

Presacral neurectomy is a laparoscopic procedure where superior hypogastric plexus is excised, so that the pain pathway is cut off from the spinal column. This procedure is done to manage chronic pelvic pain when conservative medical therapy fails.[1]

Additional images

References

  1. ^ a b Chen, FP (January 2000). "Laparoscopic presacral neurectomy for chronic pelvic pain". Chang Gung Medical Journal. 23 (1): 1–7. PMID 10746403.
  2. ^ a b c Eid S, Iwanaga J, Chapman JR, Oskouian RJ, Loukas M, Tubbs RS (2018). "Superior Hypogastric Plexus and Its Surgical Implications During Spine Surgery: A Review". World Neurosurg. 120: 163–167. doi:10.1016/j.wneu.2018.08.170. PMID 30172971. S2CID 52145526.
  3. ^ Sinnatamby, Chummy (2011). Last's Anatomy (12th ed.). Elsevier Australia. p. 281. ISBN 978-0-7295-3752-0.

Public domain This article incorporates text in the public domain from page 987 of the 20th edition of Gray's Anatomy (1918)


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