Turkish Archives of Otorhinolaryngology
Original Investigation

Accessory Nerve Anatomy in Anterior and Posterior Cervical Triangle: A Fresh Cadaveric Study

1.

Department of Otolaryngology Head and Neck Surgery, Bakırköy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey

2.

Department of Forensic Science, İstanbul Forensic Medicine Institution, İstanbul, Turkey

Turk Arch Otorhinolaryngol 2020; 58: 149-154
DOI: 10.5152/tao.2020.5263
Read: 62 Downloads: 33 Published: 13 October 2020

Objective: To understand the variations and normal course of the accessory nerve (CNXI) to help more accurate and confident neck dissection.

Methods: The course of the CNXI in the neck, its relationship to the surrounding anatomic structures and the factors affecting its course were investigated.

Results: A total of 100 neck dissections were performed on 50 fresh cadavers. Eleven division variations were observed at the anterior triangle. The location of CNXI at the posterior border of the sternocleidomastoid muscle (PBSCM) was investigated and the ratio between the distance from the mastoid apex (MAA) to CNXI at the PBSCM and the distance from MAA to the posterior border where the PBSCM is attached to the clavicle increased as height of the subject increased (p<0.05).

Conclusion: It must be kept in mind that it is better to search for CNXI in taller subjects more inferiorly at the posterior border of the sternocleidomastoid muscle.

 


 

Amaç: Daha güvenli ve emin boyun diseksiyonu yapılabilmesini sağlamak için, aksesuar sinirin normal seyrinin ve varyasyonlarının bilinmesi.

Gereç ve Yöntemler: Aksesuar sinirin boyundaki anatomik yapılarla ilişkisi, normal seyri ve bu seyri etkileyen faktörler incelendi.

Bulgular: Elli taze kadavrada toplam 100 diseksiyon yapıldı. Ön üçgende 11 dallanma varyasyonu saptandı. Aksesuar sinirin sternokleidomastoid kas arka sınırındaki yeri incelendi; boy uzadıkça mastoid apeks -sternokleidomastoid kas çıkış noktası arası mesafe/mastoid apeks-klavikula arka tutunma noktası arka sınır mesafesi oranında artış olduğu saptandı (p<0,05).

Sonuç: Sternokleidomastoid kas arka sınırında aksesuar sinir çıkış noktasının uzun boylularda daha inferiorda olduğu akılda tutulmalıdır.

Cite this article as: Abakay MA, Güneş S, Küçük C, Yazıcı ZM, Gülüstan F, Arslan MN, et al. Accessory Nerve Anatomy in Anterior and Posterior Cervical Triangle: A Fresh Cadaveric Study. Turk Arch Otorhinolaryngol 2020; 58(3): 149-54.

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ISSN2667-7466 EISSN 2667-7474