title: The incidence and anatomical features of the McKenzie branch: a cadaver study.
abstract: OBJECTIVE
  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.
  
  
  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.
  
  
  CONCLUSIONS
  The knowledge of the anatomy of these connections may help the clinician in determining treatments and surgical approaches in this anatomical area.
authors.affiliation: Ege University Medical Faculty, Anatomy Department, Izmir, Turkey. canan.y.saylam@ege.edu.tr
authors.forename: Canan Yurttaş
authors.initials: CY
authors.lastname: Saylam
authors.forename: Mustafa
authors.initials: M
authors.lastname: Orhan
authors.forename: Zühre
authors.initials: Z
authors.lastname: Ikiz
authors.forename: Hülya
authors.initials: H
authors.lastname: Uçerler
authors.forename: Mehmet
authors.initials: M
authors.lastname: Zileli
mesh_terms: D000055:Accessory Nerve / Q000033:anatomy & histology* / Q000601:surgery; D000368:Aged; D000369:Aged, 80 and over; D002102:Cadaver; D001270:Cervical Atlas / Q000294:innervation*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D042282:Microdissection; D008875:Middle Aged; D009408:Nerve Compression Syndromes / Q000453:epidemiology / Q000473:pathology / Q000601:surgery; D019051:Rhizotomy; D013126:Spinal Nerve Roots / Q000033:anatomy & histology* / Q000601:surgery; D014103:Torticollis / Q000453:epidemiology / Q000473:pathology / Q000601:surgery