The Study of Sciatic Nerve Based on Its Morphometric Measurements And It's Variations In Rayalaseema Region.
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2018, Vol 17, Issue 3
Abstract
Introduction:Sciatic nerve is the thickest and longest nerve in the human body, consists mostly of lumbosacral fibres consisting L4, L5, S1, S2, S3, they are both sensory and motor. Sciatica has been torturing mankind for hundred if not thousands of years. Sciatica refers to a burning, stinging and numbing pain that is felt in the buttock, thigh, leg and foot which not be associated with low back pain. The sciatic nerve is frequently involved in daily medical practice of neurology, orthopedics, rehabilitation of anesthesia. Sciatic nerve present significant variability concerning its topography and division into terminal branches (common peroneal nerve and tibial nerve). Methods: In the present study, 100 lower limbs of 50 embalmed adult cadavers which were formalin fixed from the Department of Anatomy of Sri Venkateswara Medical College, Tirupati, and Rajiv Gandhi Institute of Medical Sciences, Kadapa, Rayalaseema region, A.P, were dissected and the width, length, exit, course, relations and level of division of sciatic nerve were studied and compared with the previous studies. Observations:The length, width, level of division of sciatic nerve and it’s variations below the piriformis muscle in both right & left lower limbs were observed. Results:The length of the sciatic nerve on the right side from the lower border of the piriformis muscle to its division into Tibial & Common Peroneal Nerves is about 2 cms. to 39.1 cms. with an average of 29 cms. While the left sciatic nerves is about 3 cms. to 39 cms. with an average of 29 cms. Width on right side is as 1.2 cms to 2.4 with an average 1.88 cms and on left side it is 1.2 cms. to 2.4 cms. with an average 1.9 cms.78% had typical division at the Superior angle of popliteal fossa, 12% are had high level division in the gluteal region with 50% on the right side and 50% on the left side and two cadavers showed bilateral variations one in male and another in the female cadaver, 6% are having intermediate division in the back of the thigh above the popliteal fossa, 4% are having low level division below the superior angle of the popliteal fossa (in the middle of the popliteal fossa) both on the right side and on the left side.
Authors and Affiliations
Dr. Bangarayya, Dr. I. Vinayaka Naik, Dr. T. Jayachandra Pillai
Keywords
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- EP ID EP369435
- DOI 10.9790/0853-1703085662.
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