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Patil J, Swamy RS, Rao MK, et al. Unique formation of sciatic nerve below the piriformis muscle - a case report. J Clin Diagn Res. 2014;8(1):148-9doi: 10.7860/JCDR/2014/7571.3977.
Patil, J., Swamy, R. S., Rao, M. K., Kumar, N., & Somayaji, S. N. (2014). Unique formation of sciatic nerve below the piriformis muscle - a case report. Journal of clinical and diagnostic research : JCDR, 8(1), 148-9. https://doi.org/10.7860/JCDR/2014/7571.3977
Patil, Jyothsna, et al. "Unique formation of sciatic nerve below the piriformis muscle - a case report." Journal of clinical and diagnostic research : JCDR vol. 8,1 (2014): 148-9. doi: https://doi.org/10.7860/JCDR/2014/7571.3977
Patil J, Swamy RS, Rao MK, Kumar N, Somayaji SN. Unique formation of sciatic nerve below the piriformis muscle - a case report. J Clin Diagn Res. 2014 Jan;8(1):148-9. doi: 10.7860/JCDR/2014/7571.3977. Epub 2014 Jan 12. PMID: 24596750; PMCID: PMC3939530.
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J Clin Diagn Res. 2014 Jan;8(1):148-9. doi: 10.7860/JCDR/2014/7571.3977. Epub 2014 Jan 12.

Unique formation of sciatic nerve below the piriformis muscle - a case report.

Journal of clinical and diagnostic research : JCDR

Jyothsna Patil, Ravindra S Swamy, Mohandas K G Rao, Naveen Kumar, S N Somayaji

Affiliations

  1. Lecturer, Department of Anatomy, Melaka Manipal Medical College, Manipal University , Manipal - 576 104, Karnataka, India .
  2. Professor, Department of Anatomy, Melaka Manipal Medical College, Manipal University , Manipal - 576 104, Karnataka, India .
  3. Professor,Department of Anatomy, Melaka Manipal Medical College, Manipal University , Manipal - 576 104, Karnataka, India .

PMID: 24596750 PMCID: PMC3939530 DOI: 10.7860/JCDR/2014/7571.3977

Abstract

Dorsal and ventral divisions of ventral rami of lower lumbar and sacral spinal nerve were found to pass ventral and dorsal to the piriformis muscle respectively. These divisions joined each other below the piriformis muscle to form sciatic nerve. This low formation of sciatic nerve was observed in distal part of left gluteal region of a 50-year-old male cadaver. The sciatic nerve thus formed passed caudally into back of thigh and divided into tibial and common peroneal nerves in the upper part of popliteal fossa. In addition, a communicating nerve from the sciatic nerve was found to join the common peroneal nerve in the popliteal fossa. Such variations may lead to piriformis syndrome or non-discogenic sciatica.

Keywords: Common peroneal nerve ligament; Sacral plexus; Tibial nerve

References

  1. Surg Radiol Anat. 2006 Mar;28(1):88-91 - PubMed

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