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Ganglion impar

Summary

The pelvic portion of each sympathetic trunk is situated in front of the sacrum, medial to the anterior sacral foramina. It consists of four or five small sacral ganglia, connected together by interganglionic cords, and continuous above with the abdominal portion. Below, the two pelvic sympathetic trunks converge, and end on the front of the coccyx in a small ganglion, the ganglion impar, also known as azygos [1] or ganglion of Walther.

Ganglion impar
Details
Identifiers
Latinganglion impar
TA98A14.3.01.037
TA26616
Anatomical terminology
[edit on Wikidata]

Clinical significance edit

A study found that in some cases a single injection of nerve block at the ganglion impar offered complete relief from coccydynia.[2]

References edit

  This article incorporates text in the public domain from page 984 of the 20th edition of Gray's Anatomy (1918)

  1. ^ Erasmus Wilson, William James (1838). Practical and surgical anatomy. p. 431. ganglion impar - azygos.
  2. ^ Foye P, Buttaci C, Stitik T, Yonclas P (2006). "Successful injection for coccyx pain". Am J Phys Med Rehabil. 85 (9): 783–4. doi:10.1097/01.phm.0000233174.86070.63. PMID 16924191.
  • Munir MA, Zhang J, Ahmad M. (2004) "A modified needle-inside-needle technique for the ganglion impar block." Can J Anaesth. 2004 Nov;51(9):915-7.

External links edit

  • "Ganglion Impar Injections to Treat Tailbone Pain" at www.TailboneDoctor.com
  • "Treatment of coccydynia by injection of local anesthetic to the ganglion impar", at coccyx.org
  • figures/chapter_32/32-6.HTM: Basic Human Anatomy at Dartmouth Medical School
  • Tailbone pain (coccyx pain, coccydynia) Peer-reviewed medical article online at eMedicine (Medscape)