Formation Variation of the medianus nerve: A Cadaveric Case Report

Öz

The median nerve, the longest branch of the brachial plexus, is formation in axillary fossa by a fusion of two nerves including the radix lateralis nervi mediani and radix medialis nervi mediani. A variant of that formation was observed during routine dissection at anatomy department of our faculty. It was found that the left median nerve was formed by three branches (two lateral and one medial). One of the roots originated from the fasciculus medialis; the other two roots originated from the fasciculus lateralis. This variation should be known and has clinical importance especially in surgical interventions, surgical interventions of traumatic cases and radiologic evaluations in order not to mislead the clinician

Anahtar Kelimeler

• Anatomical variation
• dissection
• median nerve
• brachial plexus

N.medianus'un Oluşum Varyasyonu: Bir Kadavra Olgu Sunumu

Öz

Plexus brachialisin en uzun dalı olan n. medianus; fossa axillariste, radix lateralis nervi mediani ile radix medialis nervi mediani'nin birleşmesi ile oluşmaktadır. Sakarya Üniversitesi Tıp Fakültesi Anatomi Anabilim Dalı’nda tıp öğrencileri için yapılan rutin diseksiyon sırasında, N.medianus'un varyant bir oluşumu gözlenmiştir. Sol aksiller bölgede, normalden farklı olarak N.medianus'un iki lateral ve bir medial dalın birleşimiyle oluştuğu tespit edilmiştir. Köklerin biri, fasciculus medialisten; diğer iki kök ise fasciculus lateralisten kaynaklanmaktaydı. Bu varyasyon, özellikle cerrahi girişimlerde, travmatik olguların cerrahi girişimlerinde ve radyolojik değerlendirmelerde klinisyeni yanıltmaması için bilinmelidir ve klinik öneme sahiptir.

Anahtar Kelimeler

• Anatomik varyasyon
• diseksiyon
• n. medianus
• plexus brachialis

Kaynakça

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