RESUMO
Background: the sciatic nerve is largest and thickest nerve in human body. It originates from L4-S3 roots of sacralplexus. It consists of 2 components namely tibial and common peroneal nerves. It passes through greater sciaticforamen and appears in the gluteal region below piriformis muscle, passes along back of the thigh and dividesinto its terminal branches viz tibial and common peroneal, near the superior angle of popliteal fossa. This pointof bifurcation into terminal branches may be variable which might be important for the clinicians.Aim: studying variations of sciatic nerve bifurcation at different levelsMaterials and methods- study conducted on 50 lower limbs, properly embalmed with formalin. The glutealregion dissected and the level of bifurcation of sciatic nerve is recorded.Results: In 42(84%) limbs the sciatic nerve terminated at the superior angle of popliteal fossa.3 limbs (6%)showed high level bifurcation in the pelvis and both branches emerged separately in infra piriform compartment.In 2 limbs (4%) sciatic nerve divided in the gluteal region. In 3(6%) limbs sciatic nerve divided in the middle of thethigh.Conclusion: knowledge of variation of sciatic nerve bifurcation helps the clinicians during intra muscularinjections, popliteal and sciatic blocks, hip surgeries.