Variations of Sciatic Nerve Bifurcation: A Study
Journal Title: International Journal of Anatomy and Applied Physiology (IJAAP) - Year 2017, Vol 3, Issue 3
Abstract
Background: The sciatic nerve (SN) is the thickest nerve in the body. It is formed in the pelvis from the ventral rami of the fourth lumbar to the third sacral spinal nerves and leaves the pelvis via the greater sciatic foramen below pyriformis and divides into Common Peroneal nerve (CPN) and Tibial nerve (TN) at the superior angle of popliteal fossa. High division of the sciatic nerve is the most common variation wherein the TN and the CPN may leave the pelvis through different routes.Such variations may lead to compression of the nerve, non discogenic sciatica, pyriform syndrome and also to incomplete sciatic nerve block. Knowledge regarding this may help the surgeon to plan for various surgical intervention pertaining to the gluteal region. Aim: To study the course and division of sciatic nerve. Methodology: The study was conducted in the department of Anatomy, Subbaiah Institute of Medical Sciences over a period of 5 years. 70 lower extremities of 35 cadavers of both sexes were studied to see the variations in sciatic nerve bifurcation. Beaton and Anson classification has been followed for the classification of division of Sciatic nerve. Results: In our study on 70 lower extremities of 35 cadavers, we observed 6 (8.6%) high division of SN. Among these, 2 (2.9%) lower extremities showed high division in the back of thigh and 4 (5.7%) showed within the pelvis. The remaining 64 (91.4%) lower extremities showed the division outside the pelvis. Conclusion: Knowledge regarding the variation in the level of division of the sciatic nerve and its pelvic exit is of utmost importance in order to prevent inadvertent injury to the nerve during various surgical interventions in the gluteal region.
Authors and Affiliations
Divya shanthi D’Sa
Keywords
Related Articles
- EP ID EP322233
- DOI 10.19070/2572-7451-1700013
- Views 112
- Downloads 0
Human Placentae in Pregnancy Induced Hypertension - A Histologic and Morphometric Analysis
Introduction: Placenta is the mirror of maternal and fetal status. It has been called a pregnancy diary that permits the clinician to study the intra uterine environment of the fetus and some of the fetal responses to di...
Methods of Studying the Social Structure of Early Hominins: A Mini Review
There has been numerous attempts by anthropologists and paleoanthropologist to study the social structure of early hominins, many of these were based on three main modalities of research; non-human primate models, behavi...
Extreme Cardiac Hypertrophy in a Male Cadaver in our Human Anatomy Class - A Case Report
In summary, in the present study we describe a 785 g heart from a 78-year-old male cadaver. The anatomy of the cardiomelic heart is described along with the consequences on the cardiovascular system which are very common...
Anatomical Variations of Aortic Arch Branching Pattern Among the Chinese
Either from congenital or ischemic problems, difficulties in aortic bypass surgery are usually caused by the unrecognized variation of aortic arch anatomy. Objective: To investigate the frequency and anatomical basis of...
Accuracy of Fine Needle Aspiration of Pelvic Masses, A Cyto-histological Correlation
Objective: Evaluation of diagnostic efficacy of Fine Needle Aspiration Cytology in differential diagnosis of pelvic masses and correlation between histopathologic and FNA diagnoses. Methods: In this prospective study fif...