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MedPulse - International Medical Journal, ISSN 2348-2516 E-ISSN: 2348-1897

Volume 1, Issue 2, April 2014 pp 196-199

Case Report

Unilateral high division of the sciatic nerve: a case report

Bashir Khan¹, Mujahid Ansari²

¹Assistant Professor, Department of Anatomy, Shri Bhausaheb Hire Government Medical College, Dhule, Maharashtra, INDIA.

Academic Editor : Dr. Bhanap P. L.

Introduction: The sciatic nerve is the largest nerve in the body. It passes through the inferior part of greater sciatic notch below piriformis muscle. It enters the back of the thigh at the lower border of the gluteus maximus and runs vertically downwards up to the superior angle of popliteal fossa where it terminates by dividing into tibial and common fibular nerves. However it may divide within the pelvis and as such its relationship with piriformis becomes variable. One such variations in the division of sciatic nerve was encountered during routine cadaveric dissection of first M,B.B.S students in the department of anatomy, Government Medical College, Aurangabad in an adult male cadaver where the sciatic nerve divided high up in pelvis with the common fibular component piercing piriformis and tibial component passing inferior to its lower border. Such anatomical variation of the sciatic nerve may contribute to the entrapment neuropathy called piriformis syndrome, failed sciatic nerve block in anaesthesia and nerve injury during intramuscular injections in gluteal region.