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Related Experiment Videos

Variability of the obturator vessels

A M Gilroy1, D C Hermey, L M DiBenedetto

  • 1Department of Cell Biology, University of Massachusetts Medical School, Worcester, USA.

Clinical Anatomy (New York, N.Y.)
|January 1, 1997
PubMed
Summary

Anatomical variations of the obturator artery and vein are common, with vessels frequently found near the pelvic rim. These findings are crucial for surgeons performing pelvic and groin procedures.

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Area of Science:

  • Anatomy
  • Vascular Anatomy
  • Surgical Anatomy

Background:

  • The obturator artery and vein typically arise from the internal iliac vessels.
  • Variations involving connections to external iliac or inferior epigastric vessels have been documented.
  • These anomalous vessels pose risks during pelvic and groin surgeries.

Purpose of the Study:

  • To determine the frequency of obturator vessel variations.
  • To assess the prevalence of vessels coursing over the pelvic rim.
  • To inform surgical and anatomical understanding.

Main Methods:

  • Examination of 105 pelvic walls (45 from the US, 60 from China).
  • Quantification of obturator artery and vein positions relative to the pelvic rim.
  • Statistical analysis of variation frequencies.

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Main Results:

  • 70-82% of pelvic halves and 83-90% of whole pelves exhibited variant obturator vessels.
  • Arteries were more commonly in the normal position, while veins frequently presented as both normal and anomalous.
  • Vessels coursing over the pelvic rim are more common than their absence.

Conclusions:

  • Anomalous obturator vessels are highly prevalent, frequently appearing near the pelvic rim.
  • Surgeons must be aware of these common variations to mitigate surgical risks.
  • These findings necessitate updates in anatomical descriptions and surgical planning.