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Effect of genioglossus, geniohyoid, and digastric advancement on tongue base and hyoid position
Author(s) -
Kutzner Emily A.,
Miot Christelle,
Liu Yuan,
Renk Elizabeth,
Park Joshua S.,
Inman Jared C.
Publication year - 2017
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1002/lary.26380
Subject(s) - genioglossus , hyoid bone , tongue , anatomy , digastric muscle , medicine , orthodontics , pathology
Objectives/Hypothesis To assess the effect of genioglossus, geniohyoid, and anterior digastric muscle advancement on base of tongue and hyoid position. Study Design Cadaver experiments. Methods In fresh cadavers, the mandibular attachments of the genioglossus, geniohyoid, and anterior digastric muscles were advanced anteriorly by 6, 10, or 14 mm, and the anterior displacement of the base of tongue and hyoid was measured. The degrees of displacement of the tongue base and hyoid by the individual muscles and combinations of muscles were compared to one another. Results In 11 cadavers, 462 measurements were taken. Genioglossus advancement alone produced significantly greater tongue base advancement than any other muscle ( P < .001). No combination of muscles produced significantly more tongue base advancement than the genioglossus alone. Geniohyoid ( P < .001) and anterior digastric muscle ( P < .001) advancement both produced significantly greater hyoid advancement than the genioglossus, but there was no difference between the two ( p = .615). No combination of muscles produced significantly more hyoid advancement than the geniohyoid or anterior digastric alone. Conclusions Genioglossus muscle advancement produces the greatest base of tongue advancement. Geniohyoid or anterior digastric muscle advancement produces the greatest hyoid advancement. Advancement of neither base of tongue nor hyoid was superior when combinations of muscles were moved. Level of Evidence NA Laryngoscope , 127:1938–1942, 2017