Variations in origin and relation of the posterior cutaneous nerve of the thigh with piriformis muscle

Authors

  • Rimple Bansal Department of Anatomy, Govt. Medical College and Rajindra Hospital, Patiala, Punjab, India
  • Ruchi Goyal Department of Anatomy, Govt. Medical College and Rajindra Hospital, Patiala, Punjab, India
  • Usha Chhabra Department of Anatomy, Govt. Medical College and Rajindra Hospital, Patiala, Punjab, India
  • Subhash Kaushal Department of Anatomy, Govt. Medical College and Rajindra Hospital, Patiala, Punjab, India

DOI:

https://doi.org/10.18203/2349-2902.isj20241740

Keywords:

Variations, Origin, Relation, Posterior cutaneous nerve of the thigh, Piriformis

Abstract

Background: The gluteal region includes a disproportionate number of nerves of all sizes, both motor and sensory. The piriformis is the uppermost of the small muscles of the gluteal region and the key to the arrangement of nerves and vessels in the buttock. The posterior cutaneous nerve of the thigh usually supplies the posterior aspect of the thigh and, according to literature the nerve terminates at the popliteal region or proximal leg. The study was undertaken to record the variations in emergence of the posterior cutaneous nerve of the thigh and its relation to piriformis muscle.

Methods: Comprised of 60-lower extremities with gluteal region from 30 embalmed adult human cadavers (52 male and 8 female specimens). Any variation in the emergence of the posterior cutaneous nerve of the thigh in relation to piriformis was noted.

Results: In the present study piriformis consisted of one belly in 55 specimens (91.67%) and two bellies of piriformis were observed in 5 specimens. In present study the posterior cutaneous nerve of thigh was emerging below the piriformis in 56 specimens (93.33%) and in 4 specimens (6.67%), the relation of posterior cutaneous nerve of thigh with piriformis was found variable which were grouped as type A, type B and type C.

Conclusions: Knowledge of variant relation of posterior cutaneous nerve of thigh with the piriformis is important as entrapment of this nerve may lead to pain in the area innervated by posterior cutaneous nerve of thigh.

References

Moore KL & Dalley AF. Lower Limb. In Clinical Oriented Anatomy, Lippincott Williams & Wilkins, 5th Edition; 2006: 589-623.

Hollinshead WH. The back and the limbs. In: Hollinshead WH, editor. Anatomy for surgeons. New York, USA: Hoeber-Harper Book; 1964: 769

Arifoglu Y, Surucu HS, Sargon MF, Tanyeli E, Yagar F. Double superior gemellus together with double piriformis and high division of sciatic nerve. Surg Radiol Anat. 1997;19:407-8.

Guvencer M, Akyer P, İyem C, Tetik S, Naderi S. Variations in the high division of the sciatic nerve and relationship between the sciatic nerve and the piriformis. Turkish Neurosurg. 2009;19(2):139-44.

Babinski MA, Machado FA, Costa WS. A rare variation in the high division of sciatic nerve surrounding the superior gemellus muscle. Euro J Morphol. 2003;41(1):41-2.

Hafferl A. Die untere extremit€at. In: Hafferl A, editor. Lehrbuch der Topographischen anatomie. Berlin, Heidelberg, New York: Springer. 1969: 227-235.

Gray H. Lower limb. In: Warwick R, Williams PL, editors. Grays anatomy. 41st Edn. Amsterdam, Netherlands: Elsevier; 2016: 1376.

Testut JL. Trait danatomie humaine. Tome 3, 1iere ed, vols. 1016e9. Paris: Gaston Doin; 1902.

Weiglein AH. Untere Extremit€at. In: Anderhuber F, Pera F, Streicher J, editors. Waldeyer Anatomie des Menschen. 19. Auflage. Berlin, New York:de Gruyter Verlag; 2012: 380e1.

Clara M. Ruckenmarksnerven, Nervi spinales. In: Clara M, editor. Nervensystem des Menschen. 2nd Edn. Leipzig: Johann Ambrosius Barth Verlag; 1953: 189e92.

Meier G, Buttner H. Lower limb. In: Meier G, Bu¨ ttner H, editors. Atlas der peripheren regionalan€asthesie. 3rd Edn. Stuttgart, New York: Georg Thieme Verlag; 2013: 160.

Romanes GJ. The peripheral nervous system. In: Cunninghams textbook for anatomy. 11th Ed. London: Oxford University Press; 1972: 764.

Feig GC, Schmid M, Zahn PK, Gonzalez CAA and Litz RJ. The posterior femoral cutaneous nerve contributes significantly to sensory innervation of the lower leg: an anatomical investigation. Br J Anaesth. 2020;124(3):308-13.

Anson BJ, Mcvay CB. Surgical Anatomy, WB Saunders Company/ Philadelphia London Toronto, 5th Edition; 1971: 1087-1088.

Vicente EJD, Viotto MJS, Barbosa CAA, Vicente PC. Study on anatomical relationships and variations between the sciatic nerve and piriformis muscle. Rev Bras Fisioter. 2007;11(3):1-8.

Tillmann B. Variations in the pathway of the inferior gluteal nerve. Anat Anz. 1979;145(3):293-302.

Gottlieb D, Decater T, Iwanaga J, Loukas M, Dumont AS, Tubbs RS. Simultaneous Posterior Femoral Cutaneous Nerve and Sciatic Nerve Variations: A Case Report. Kurume Med J. 2022;67(2.3):113-115.

Kurtoglu Z, Uluutku NH. A combined variation in the gluteal region. Tr J Med Sci. 1999;29:579-81.

Jiamjunyasiri A, Tsutsumi M, Muro S, Akita K. Origin, course, and distribution of the posterior femoral cutaneous nerve and the spatial relationship among its branches. Anato Sci Int. 2023;98:540-7.

Johnson CS, Johnson RL, Niesen AD, Stoike DE, Pawlina W. Ultrasound-Guided Posterior Femoral Cutaneous Nerve Block:A Cadaveric Study. J Ultrasound Med. 2018;37(4):897-903.

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Published

2024-06-27

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Original Research Articles