Complex Variation Of Median Nerve: A Case Report

Yıl 2013, Cilt: 15 Sayı: 1, 58 - 60, 01.03.2013

Oguz Aslan Ozen Ahmet Songur Yucel Gonul Ramazan Uygur

Öz

During routine dissections we saw complex variation of median nerve in the right arm of anadult male cadaver. Lateral cord continued as lateral root of median nerve without giving offmusculocutaneous nerve and it formed median nerve joining with medial root of median nervewhich arises from medial cord. There was a communicating accessory branch 2.5 cm longrunning obliquely between the cords which formed the median nerve. Coracobrachialis musclewas innervated by a thin branch arising from lateral cord. Median nerve given two branches ata point 9 cm distal to its formation. First branch supplied to biceps brachii, the second branchcontinued as brachial muscle’s nerve and lateral antebrachial cutaneous nerve. Main trunk passedthrough the cubital fossa and ran along the forearm following the normal course of mediannerve. We think it is important that clinicians performing surgical procedures or nerve blocksin this region should consider this variation in order to avoid failures and complications

Anahtar Kelimeler

Median nerve, musculocutaneous nerve, variation, dissection

Median Sinirin Kompleks Varyasyonu: Olgu Sunumu

Öz

Rutin diseksiyon sırasında yetişkin erkek kadavranın sağ kolunda kompleks bir median sinirvaryasyonu gördük. Lateral fasikül muskulokutanöz sinir terminal dalını vermeden mediansinirin lateral kökü olarak devam etmekte ve medial fasikülden gelen median sinirin medialkökü ile birleşerek median siniri oluşturmaktaydı. Median siniri oluşturan bu iki fasikül arasındaoblik olarak seyreden 2,5 cm uzunluğunda birleştirici aksesuar bir dal mevcuttu. Korakobrakialkas lateral fasikülden gelen ince bir dal tarafından innerve edilmişti. Median sinir oluşumunun9 cm distalinde iki dal vermişti. İlk dal biseps braki kasını innerve etmişti, ikinci dal ise brakialiskasının siniri ve lateral antebrakial kutanöz sinir olarak devam etmişti. Ana gövde ise kubitalfossa içinden geçip median sinirin normal seyrini izleyerek önkol boyunca uzanmıştı.Klinisyenlerin bu bölgedeki cerrahi işlemleri ve sinir bloklarını yaparken bu varyasyonu gözönünde bulundurmasının başarısız girişimleri ve komplikasyonları önlemek için önemliolduğunu düşünmekteyiz

Anahtar Kelimeler

Median sinir, muskulokutanöz sinir, varyasyon, diseksiyon

Kaynakça

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