What is the anatomy of the obturator canal in relation to abdominal hernias?

Updated: Jul 23, 2019
  • Author: Assar A Rather, MBBS, MD, FACS; Chief Editor: John Geibel, MD, DSc, MSc, AGAF  more...
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Answer

The obturator canal runs obliquely in the medial thigh between the pectineus, obturator externus, and adductor longus. The anterior surface of sacral vertebrae 2-4 gives rise to the piriformis to have a tendon traversing the greater sciatic foramen. Above and below this tendon, in the greater sciatic foramen, are the suprapiriform and infrapiriform foramina. The superior gluteal vessels and nerves exit through the suprapiriform foramen; the sciatic nerve, perineal nerves, and pelvic vessels pass through the infrapiriform foramen.


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