Internal iliac vein

Internal iliac vein
The veins of the right half of the male pelvis.
The iliac veins. (Int. iliac visible at center.)
Details
Drains toCommon iliac vein
ArteryInternal iliac artery
Identifiers
LatinVena iliaca interna,
vena hypogastrica
TA98A12.3.10.004
TA25024
FMA18884
Anatomical terminology

The internal iliac vein (hypogastric vein) begins near the upper part of the greater sciatic foramen, passes upward behind and slightly medial to the internal iliac artery and, at the brim of the pelvis, joins with the external iliac vein to form the common iliac vein.

Structure

Several veins unite above the greater sciatic foramen to form the internal iliac vein. It does not have the predictable branches of the internal iliac artery but its tributaries drain the same regions.[1] The internal iliac vein emerges from above the level of the greater sciatic notch It runs backwards, upwards and towards the midline to join the external iliac vein in forming the common iliac vein in front of the sacroiliac joint. It usually lies lateral to the internal iliac artery.[2] It is wide and 3 cm long.[3]

Tributaries

Originating outside the pelvis, its tributaries are the gluteal, internal pudendal and obturator veins. Running from the anterior surface of the sacrum are the lateral sacral veins. Coming from the pelvic plexuses and appropriate to gender are the middle rectal, vesical, prostatic, uterine and vaginal veins.[1][3]

ReceivesDescription
superior gluteal veins
inferior gluteal veins
internal pudendal veins
obturator veins		have their origins outside the pelvis;
lateral sacral veinslie in front of the sacrum
middle hemorrhoidal vein
vesical vein
uterine vein
vaginal veins		originate in venous plexuses connected with the pelvic viscera.

Variation

On the left, the internal iliac vein lies lateral to the internal iliac artery 73% of the time.[4] On the right, this is 93% of the time.[4]

Function

The internal iliac veins drain the pelvic organs, sacrum, and coccyx.[2]

Clinical significance

If thrombosis disrupts blood flow in the external iliac systems, the internal iliac tributaries offer a major route of venous return from the femoral system. Damage to internal iliac vein tributaries during surgery can seriously compromise venous drainage and cause swelling of one or both legs.[1]

Additional images

References

  1. 1 2 3 Delancey, John O.L. (2016). "73, True pelvis, pelvic floor and perineum". In Standring, Susan (ed.). Gray's Anatomy: The Anatomical Basis of Clinical Practice (41st ed.). Elsevier. pp. 1221–1236. ISBN 978-0-7020-6851-5.
  2. 1 2 Cramer, Gregory D.; Ro, Chae-Song (January 1, 2014), Cramer, Gregory D.; Darby, Susan A. (eds.), "Chapter 8 - The Sacrum, Sacroiliac Joint, and Coccyx", Clinical Anatomy of the Spine, Spinal Cord, and Ans (Third Edition), Saint Louis: Mosby, pp. 312–339, ISBN 978-0-323-07954-9, retrieved January 28, 2021
  3. 1 2 Sinnatamby, Chummy S. (2011). "5". Last's Anatomy: Regional and Applied (12th ed.). Great Britain: Churchill Livingstone Elsevier. p. 309. ISBN 978-0-7020-4839-5. Retrieved March 25, 2018.
  4. 1 2 Bleich, April T.; Rahn, David D.; Wieslander, Cecilia K.; Wai, Clifford Y.; Roshanravan, Shayzreen M.; Corton, Marlene M. (December 1, 2007). "Posterior division of the internal iliac artery: Anatomic variations and clinical applications". American Journal of Obstetrics and Gynecology. 197 (6): 658.e1–658.e5. doi:10.1016/j.ajog.2007.08.063. ISSN 0002-9378. PMID 18060970.

Public domain This article incorporates text in the public domain from page 673 of the 20th edition of Gray's Anatomy (1918)


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