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Sciatic nerve high division: two different anatomical variants.

Diogo Pais1, Diogo Casal, Maria Alexandre Bettencourt Pires

  • 1Anatomy Department, Medical Sciences Faculty, New University of Lisbon, Lisbon, Portugal.

Acta Medica Portuguesa
|July 3, 2013
PubMed
Summary
This summary is machine-generated.

Anatomical variations of the sciatic nerve are common and clinically significant. These sciatic nerve variants can impact surgical procedures and lead to conditions like pyriformis syndrome.

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Area of Science:

  • Anatomy
  • Clinical Medicine
  • Surgical Anatomy

Background:

  • Sciatic nerve variations are common and medically significant.
  • Understanding these variations is crucial for various medical fields.
  • This study focuses on specific anatomical variants of the sciatic nerve.

Purpose of the Study:

  • To present two distinct anatomical variants of the sciatic nerve.
  • To discuss the clinical implications of these sciatic nerve variations.
  • To highlight the prevalence and importance of sciatic nerve anomalies.

Main Methods:

  • Dissection of three Caucasian cadavers.
  • No history of lower limb trauma or surgery in the selected cadavers.
  • Identification and documentation of sciatic nerve branching patterns.

Main Results:

  • All dissected sciatic nerves divided above the popliteal fossa.
  • Two cases showed sciatic nerve division in the gluteal region into common fibular and tibial nerves.
  • One case exhibited sciatic nerve division within the pelvis, with unique pathways for its terminal branches.

Conclusions:

  • A rare sciatic nerve variant within the pelvis can lead to nerve entrapment, pyriformis syndrome, sciatica, and coccygodynia.
  • High sciatic nerve division can reduce the efficacy of popliteal nerve blocks.
  • Awareness of sciatic nerve anatomical variants is essential for anesthesiology, neurology, sports medicine, and surgery.