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Updated: Jul 2, 2026

Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing
Published on: May 6, 2014
Influence of craniofacial morphology on hyoid movement: a preliminary correlational study
Keith A Mays1, Jeffrey B Palmer, Keith V Kuhlemeier
1Department of Endodontics, Prosthodontics, and Operative Dentistry, University of Maryland Baltimore College of Dental Surgery, Baltimore, MD 21201, USA. kmays@umaryland.edu
Abstract:
There has been little attention given to the relationship between variations in normal craniofacial morphology and swallowing physiology. This preliminary investigation evaluated the relationship between the Frankfort-mandibular plane angle (FMA) and hyoid displacement during swallowing. Hyoid movement was evaluated during 12-ml and 24-ml swallows of liquid barium in 12 healthy subjects (age = 20-29 years, median = 23 years). Lateral projection videofluorography was utilized. Positions of the hyoid at maximum forward displacement, maximum upward displacement, starting position, and ending position were determined using image analysis software. The mean FMA was 28.92 degrees +/- 4.08 degrees (mean +/- SD, range = 20 degrees -34 degrees ). A Pearson correlation (
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