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Journals / Turkish Neurosurgery / 2009 / Cilt: 19 - Sayı: 2

Siyatik sinirin yüksek divizyon varyasyonları ve piriformis-siyatik sinir ilişkisi

Variations in the high division of the sciatic nerve and relationship between the sciatic nerve and the piriformis

MUSTAFA GÜVENÇER
Cihan İYEM
ŞAHİKA PINAR AKYER
Süleyman TETİK
SAİT NADERİ
Pages
139–144
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

These variations require reviewing the piriformis syndrome.

📌 3 Key Takeaways

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Objective & Hypothesis:OBJECTIVE: The sciatic nerve (SN) separates into its branches, the tibial and common fibular nerves, outside the pelvis.
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Key Findings & Data:However, it may rarely be separated within the pelvis.
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Conclusion & Impact:These variations require reviewing the piriformis syndrome.
🔬Design:Review & Systematic Survey
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

OBJECTIVE: The sciatic nerve (SN) separates into its branches, the tibial and common fibular nerves, outside the pelvis. However, it may rarely be separated within the pelvis. In such cases, the tibial nerve and the common fibular nerve may leave the pelvis through different routes. These variations may cause nerve compressions under other anatomic structures, resulting in non-discogenic sciatica. The aim of this study was to define the level of the SN exit and of the SN division. MATERIAL and METHOD: 50 gluteal regions were examined in 25 formalin-fixed adult male cadavers. RESULTS: In 52% of the cases, the SN exited the pelvis as a whole nerve without any division, whereas in 48% a high division was observed. Branches of the SN left the pelvis through the infrapiriform foramen (IP) as two separate nerves In 24%. One branch of the SN left the pelvis through the IP and other through a different route in another 24%. CONCLUSION: The differences in the exit routes of these two nerves are important in clarifying the clinical etiology of nondiscogenic sciatica. These variations require reviewing the piriformis syndrome.

Özet

AMAÇ: Siyatik sinir (SS) çoğunlukla, pelvis dışında tibial (TS) ve common fibular (CFS) dallarına ayrılır. Ancak bazan pelvis içinde de dallara ayrılabilir. Bu durumlarda iki sinir farklı yollardan geçerek pelvisten çıkabilirler. Bu varyasyonlar, nondiskojenik siyatika ile sonuçlanan sinir basılarına neden olabilir. Bu çalışmanın amacı, SS'nin farklı bölünme mesafelerini ve pelvisten çıkış varyasyonlarına dikkat çekmektir. GEREÇ-YÖNTEM: 25 formalin ile fikse erişkin erkek kadavranın 50 gluteal bölgesi disseke edilerek değerlendirildi. BULGULAR: SS, %52 oranında dallarına ayrılmadan bütün olarak çıkmakta, %48'inde ise yüksek bölünme göstermektedir. %24'ünde SS'nin ayrılmış dalları infrapiriform foramen (IP)'den geçerek pelvisten çıkarken diğer %24'ünde ise dallardan biri IP dışında farklı bir yoldan geçer. SONUÇ: SS'nin dallarının farklı yollardan geçerek pelvisten çıkması non-diskojenik siyatika klinik etiyolojisinin tanımlanmasında önem taşır. Bu varyasyonlar piriformis sendromunu değerlendirmek için gereklidir.

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Cite This Article

GÜVENÇER, M., İYEM, C., AKYER, Ş. P., TETİK, S., NADERİ, S. (2009). Siyatik sinirin yüksek divizyon varyasyonları ve piriformis-siyatik sinir ilişkisi. Turkish Neurosurgery, Cilt: 19 - Sayı: 2, 139–144. https://ajindex.com/articles/417785

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References (1)

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