title: Pattern of gross displacement of the vocal fold in adduction and abduction movements.
abstract: The pattern of gross displacement of the vocal fold during adduction and abduction was studied in 4 adult fresh human larynges (2 males and 2 females). Markers were placed on specific sites along the edge of the vocal fold. Preliminary observations showed upward and lateral movement of the free edge during abduction. The vocal fold as a whole glides into and fills the cavity of the laryngeal ventricle. To quantify this observation 14 larynges (8 males and 6 females) were studied, using a technique designed to measure vertical and horizontal displacement of the vocal fold. An average of a 1.34 mm elevation and 4.43 mm lateral excursion were observed at midvocal fold level. A model for studying the pattern of vocal fold abduction is suggested and discussed.
authors.affiliation: Unit of Phoniatrics Faculty of Medicine, Ain Shams University, Cario, Egypt.
authors.forename: M N
authors.initials: MN
authors.lastname: Kotby
authors.forename: S E
authors.initials: SE
authors.lastname: Basiouny
authors.forename: M
authors.initials: M
authors.lastname: Amin
authors.forename: D
authors.initials: D
authors.lastname: Garrett
authors.forename: J A
authors.initials: JA
authors.lastname: Kirchner
authors.forename: J C
authors.initials: JC
authors.lastname: Kahane
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction / Q000502:physiology*; D012119:Respiration / Q000502:physiology; D014827:Vocal Cords / Q000502:physiology*