European Journal of Biomedical and Pharmaceutical Sciences

ANATOMICAL VARIATION OF SCIATIC NERVE DIVISION – A CASE REPORT.

Natwar Lal Gaur*, Jagdish Soni, Samta Gaur, Buddhadeb Ghosh, Heena Chaudhari

ABSTRACT

Sciatic Nerve is a thickest nerve of the body. It is continuation of the upper band of the sacral plexus. It leaves the pelvis via greater sciatic foramen bellow the piriformis and then divided at the apex of popliteal fossa as a tibial and common peroneal which are attached together by Fibrous sheath and supply greater part of lower limb however; it rare divide within the pelvis and two components leaves the pelvis through different routes. This variation can lead to entrapment neuropathy called as piriformis syndrome. During routine dissection of 14 adult cadaver including 28 gluteal region in Department of Anatomy, Govt. Medical College Baroda, Gujarat a higher division of sciatic nerve was noted in one male cadaver [3.6%] right side gluteal region. Components were passing below the piriformis muscle and it is entrapped by the muscle. Conclusion: This type of division of sciatic nerve is quite higher. The variations in the division of sciatic nerve are important in surgico-clinical cases like nerve block, piriformis syndrome etc.

Keywords: sciatic Nerve, piriformis muscle, variation, gluteal region, piriformis syndrome.