The Incidence and Anatomical Features of the McKenzie Branch: A Cadaver Study

Canan Yurttaş SAYLAM; Mustafa ORHAN; Zühre Aslı AKTAN İKİZ; Hülya UÇERLER; Mehmet ZİLELİ

Issue release date: 12.11.2024

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Turkish Neurosurgery 2009 , Vol 19 , Num 1

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The Incidence and Anatomical Features of the McKenzie Branch: A Cadaver Study

Canan Yurttaş SAYLAM¹, Mustafa ORHAN², Zühre Aslı AKTAN İKİZ³, Hülya UÇERLER⁴, Mehmet ZİLELİ⁵

^1,2,3,4Ege University Medical Faculty, Anatomy Department, Izmir, Turkey
⁵Ege University Medical Faculty, Neurosurgery Department, Izmir, Turkey AIM: The aim of this study was to demonstrate the morphological characteristics of the connections between the spinal accessory nerve and the anterior root of the first cervical nerve (C1) which is also called the McKenzie branch.

MATERIAL and METHODS: The cranial cervical regions of 49 specimens from 27 human cadavers were used for this study under an operating microscope. The topographical relationship of the accessory nerve to the anterior roots of C1 were studied.

RESULTS: One cadaver had a connection branch (McKenzie branch) on both sides.

CONCLUSION: The knowledge of the anatomy of these connections may help the clinician in determining treatments and surgical approaches in this anatomical area. Keywords : Spinal accessory nerve, First cervical spinal nerve, Anterior root, McKenzie branch

Corresponding author : Canan Yurttaş Saylam, canan.y.saylam@ege.edu.tr