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Research Journal of Medical Sciences

ISSN: Online 1993-6095
ISSN: Print 1815-9346
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Study of Variations in the Course and Distribution of Sciatic Nerve in the Gluteal Region and Back of Thigh in Adult Human Cadavers

Parvatha Reddy S. Kumari, P. Surya Venkata Narayana, Thatiparthi Indira and S. Teresa Rani
Page: 792-796 | Received 23 Feb 2023, Published online: 31 May 2023

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https://doi.org/10.36478/10.36478/makrjms.2023.5.792.796

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Abstract

Variations in the course and distribution of the sciatic nerve in the gluteal region and back of the thigh are clinically significant for surgical interventions and management of sciatic nerve‐related conditions. This study aims to document these variations in adult human cadavers. The study examined 34 extremities from adult human cadavers to observe the typical and atypical divisions of the sciatic nerve, its relationship with the piriformis muscle the topographical variations. The levels of sciatic nerve division into terminal branches were also recorded. Out of 34 extremities, 76.47% exhibited typical divisions of the sciatic nerve, while 23.53% showed atypical patterns. The relationship between the sciatic nerve and the piriformis muscle was predominantly Type 1 (91.18%), with less common occurrences of Type 2 (5.88%) and Type 3 (2.94%) relationships. No Type 4 relationships were observed. Topographical variations showed that Group I (typical patterns) accounted for 94.12% of the cases, with 91.18% falling under subcategory I A. Group II (atypical patterns) was observed in 5.88% of the cases. The division of the sciatic nerve into terminal branches occurred at low levels in 76.48% of the cases, intermediate levels in 14.7% high levels in 8.82%. The study highlights the predominance of typical sciatic nerve divisions and relationships with the piriformis muscle in the examined cadavers. These findings enhance the anatomical understanding necessary for clinical and surgical practices involving the sciatic nerve. Awareness of these variations can aid in reducing surgical complications and improving patient outcomes.

How to cite this article:

Parvatha Reddy S. Kumari, P. Surya Venkata Narayana, Thatiparthi Indira and S. Teresa Rani. Study of Variations in the Course and Distribution of Sciatic Nerve in the Gluteal Region and Back of Thigh in Adult Human Cadavers.
DOI: https://doi.org/10.36478/10.36478/makrjms.2023.5.792.796
URL: https://www.makhillpublications.co/view-article/1815-9346/10.36478/makrjms.2023.5.792.796