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Bilateral persistent sciatic arteries in a Japanese man.

Futoshi Yazama1, Naohiro Hatori, Hiroyuki Kudoh

  • 1Department of Anatomy, Yokohama City University School of Medicine, Fukuura 3-9, Kanazawa-ku Yokohama, Kanagawa 236-0004, Japan. fyzma@med.yokohama-cu.ac.jp

Anatomical Science International
|November 7, 2002
PubMed
Summary

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A rare bilateral persistent sciatic artery (PSA) anomaly was discovered in a cadaver. This finding challenges the assumption that the inferior gluteal artery is a remnant of sciatic artery regression.

Area of Science:

  • Anatomy
  • Developmental Biology
  • Vascular Surgery

Background:

  • The sciatic artery typically regresses during embryonic development.
  • Persistent sciatic artery (PSA) is a rare vascular anomaly.
  • The inferior gluteal artery is often considered a remnant of sciatic artery regression.

Purpose of the Study:

  • To document a rare case of bilateral persistent sciatic artery (PSA).
  • To investigate the anatomical relationship between PSA and the inferior gluteal artery.
  • To contribute to the understanding of lower limb vascular development.

Main Methods:

  • Cadaveric dissection of a 74-year-old Japanese male.
  • Bilateral examination of lower limb vasculature.
  • Detailed anatomical description and photographic documentation.

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Main Results:

  • A persistent sciatic artery (PSA) was identified bilaterally, originating from the internal iliac artery and terminating at the popliteal artery.
  • The PSA did not anastomose with perforating arteries.
  • Crucially, both the PSA and the inferior gluteal arteries were present simultaneously on both sides.

Conclusions:

  • This case presents a rare bilateral PSA coexisting with the inferior gluteal artery.
  • The simultaneous presence challenges the notion of the inferior gluteal artery solely as a remnant of sciatic artery regression.
  • Highlights the variability in lower limb arterial development and the need for awareness in clinical practice.