The sciatic nerve in human cadavers - high division or low formation?

• Autorzy: Khan A.A. , Asari M.A. , Pasha M.A.
• Języki publikacji: EN

Abstrakty

EN

Variations of the sciatic nerve have been extensively studied in the past including its relationship with the piriformis muscle and associated clinical conditions like piriformis syndrome and sciatica. In the present study we noticed some interesting variations of the sciatic nerve, which were slightly different from the cases described earlier. In the previous studies most of the authors described the higher division of sciatic nerve and none of them discussed its formation. In this study we tried to look its formation from the sacral plexus and its divisions in the thigh. We noticed that in one cadaver the two components of the sciatic nerve originated directly from the sacral plexus and coursed down without merging in the thigh. Should this be called a higher division or non formation of the sciatic nerve? On the other hand in two other cadavers, the two divisions after emerging separately from the sacral plexus, united in the gluteal region and in the thigh respectively. Should we call this as higher division or low formation of the sciatic nerve? In two other cadavers the sciatic nerve emerged from the greater sciatic foramen below the piriformis and divided in the gluteal region itself. Ideally this should be called as higher division of sciatic nerve. (Folia Morphol 2016; 75, 3: 306–310)

• Wydawca: -
• Czasopismo: Folia Morphologica
• Rocznik: 2016
• Tom: 75
• Numer: 3
• Opis fizyczny: p.306-310,fig.,ref.

Twórcy

autor

Khan A.A.

• Department of Clinical and Neuroanatomy, Universiti Sains, Health Campus, USM Kubag Kerian, 16150, Kelantan, Malaysia

autor

Asari M.A.

• Department of Neurohistology, Universiti Sains, 11800 Gelugor, Pinang, Malaysia

autor

Pasha M.A.

• Department of Surgery and Clinical Anatomy, Universiti Sains, 11800 Gelugor, Pinang, Malaysia

Bibliografia

• 1. Arifoğlu Y, Sürücü HS, Sargon MF, Tanyeli E, Yazar F (1997) Double superior gemellus together with double piriformis and high division of the sciatic nerve. Surg Radiol Anat, 19: 407–408.
• 2. Babinski MA, Machado FA, Costa WS (2003) A rare variation in the high division of the sciatic nerve surrounding the superiorgemellus muscle. Eur J Morphol, 41: 41–42.
• 3. Barton PM (1991) Piriformis syndrome: a rational approach to management. Pain, 47: 345–352.
• 4. Beaton LE, Anson BJ (1937) The relation of the sciatic nerve and its subdivisions to the piriformis muscle. Anat Rec, 70: 1–5.
• 5. Chen WS (1994) Bipartite piriformis muscle: an unusual case of sciatic nerve entrapement. Pain, 58: 269–272.
• 6. Chiba S (1992) Multiple positional relationships of nerves arising from the sacral plexus to the piriformis muscle in humans. Kaibogaku Zasshi, 67: 691–724.
• 7. Güvençer M, Iyem C, Akyer P, Tetik S, Naderi S (2009) Variations in the high division of the sciatic nerve and relationship between the sciatic nerve and the piriformis. Turkish Neurosurg, 19: 139–144.
• 8. Kırıcı Y, Ozan H (1999) Double gluteus maximus muscle with associated variations in the gluteal region. Surg Radiol Anat, 21: 397–400.
• 9. Kosukegawa I, Yoshimoto M, Isogai S, Nonaka S, Yamashita T (2006) Piriformis syndrome resulting from a rare anatomic variation. Spine, 31: 664–666.
• 10. Machado FA, Babinski MA, Brasil FB, Favorito LA, AbiduFigureiedo M, Costa MG (2003) Anatomical variations between sciatic nerve and priform muscle during fetal period in human. Int J Morphol, 21: 29–35.
• 11. Mas N, Ozekşi P, Ozdemir B, Kapakin S, Sargon MF, Celik HH, Yener N (2003) A case of bilateral high division of the sciatic nerves, together with a unilateral unusual course of the tibial nerve. Neuroanatomy, 2: 13–15.
• 12. Matejcík V (2010) Anatomical variations of lumbosacral plexus. Surg Radiol Anat, 32: 409–414.
• 13. Natsis K, Totlis T, Konstantinidis GA, Paraskevas G, Piagkou M, Koebke J (2014) Anatomical variations between the sciatic nerve and the piriformis muscle: a contribution to surgical anatomy in piriformis syndrome. Surg Radiol Anat, 36: 273–280.
• 14. Ozaki S, Hamabe T, Muro T (1999) Piriformis syndrome resulting from an anomalous relationship between the sciatic nerve and piriformis muscle. Orthopedics, 22: 771–772.
• 15. Papadopoulos EC, Khan SN (2004) Piriformis syndrome and low back pain: a new classification and review of the literature. Orthop Clin Am, 35: 65–71.
• 16. Pecina M (1979) Contribution to the etiological explanation of the piriformis syndrome. Acta Anat (Basel), 105: 181–187.
• 17. Pokorny D, Jahoda D, Veigl D, Pinskerova V, Sonsa A (2006) Topographic variations of the relationship of the sciatic nerve and the piriformis muscle and its relevance to palsy after total hip arthroplasty. Surg Radiol Anat, 28: 88–91.
• 18. Prakash, Bhardwaj AK, Devi MN, Sridevi NS, Rao PK, Singh G (2010) Sciatic nerve division: a cadaver study in the Indian population and review of them literature. Singapore Med J, 51: 721.
• 19. Robinson DR (1997) Pyriformis syndrome. The relation to sciatic pain. Am J Surg,73: 355–380.
• 20. Sayson SC, Ducey JP, Maybrey JB, Wesley RL, Vermilion D (1994) Sciatic entrapment neuropathy associated with an anomalous piriformis muscle. Pain, 59: 149–152.
• 21. Smoll NR (ALFABET!!) (2010) Variations of the piriformis and sciatic nerve with clinical consequence: a review. Clin Anat, 23: 8–17.
• 22. Standring S (2005) Gray’s anatomy. The anatomical basis of clinicalpractice. 39 Ed. Elsevier Churchill Livingstone, Spain 1403, 1404, 1446.
• 23. Ugrenovic S, Jovanovic I, Krstic V, Stojanovic V, Vasovic L, Antic S, Pavlovic S (2005) The level of the sciatic nerve division and its relations to the piriform muscle. Vojnosanit Pregl, 62: 45–49.

Identyfikatory

DOI

10.5603/FM.a2015.0130