Quantitative Assessment of Hyoid Bone Displacement From Video Images During Swallowing Given the relationship between hyoid displacement and aspiration, a simple, accurate, clinically useful method for identification of reduced hyoid displacement is needed. The purpose of this investigation was to validate a quantitative method for clinically assessing hyoid bone movement during swallowing. Videofluoroscopic evaluations of 20 male subjects—10 who had been ... Research Note
Research Note  |   June 01, 1995
Quantitative Assessment of Hyoid Bone Displacement From Video Images During Swallowing
 
Author Affiliations & Notes
  • Adrienne L. Perlman
    Department of Speech and Hearing Science University of Illinois at Urbana-Champaign
  • Douglas J. VanDaele
    College of Medicine University of Iowa Iowa City
  • Melissa S. Otterbacher
    Department of Speech and Hearing Science University of Arizona Tucson
  • Contact author: Adrienne L. Perlman, PhD, Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, 901 South Sixth Street, Champaign, IL 61820-6206.
    Contact author: Adrienne L. Perlman, PhD, Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, 901 South Sixth Street, Champaign, IL 61820-6206.×
Article Information
Swallowing, Dysphagia & Feeding Disorders / Speech / Research Notes
Research Note   |   June 01, 1995
Quantitative Assessment of Hyoid Bone Displacement From Video Images During Swallowing
Journal of Speech, Language, and Hearing Research, June 1995, Vol. 38, 579-585. doi:10.1044/jshr.3803.579
History: Received June 30, 1994 , Accepted January 23, 1995
 
Journal of Speech, Language, and Hearing Research, June 1995, Vol. 38, 579-585. doi:10.1044/jshr.3803.579
History: Received June 30, 1994; Accepted January 23, 1995

Given the relationship between hyoid displacement and aspiration, a simple, accurate, clinically useful method for identification of reduced hyoid displacement is needed. The purpose of this investigation was to validate a quantitative method for clinically assessing hyoid bone movement during swallowing. Videofluoroscopic evaluations of 20 male subjects—10 who had been subjectively assessed as demonstrating normal hyoid displacement during swallowing, and 10 who had been subjectively assessed as demonstrating reduced displacement during swallowing—were analyzed. A video measuring gauge was used, and a software spreadsheet was developed to perform trigonometric calculations for determination of anterior/ superior hyoid trajectories. Statistically significant differences were found between groups in both the anterior and superior directions of hyoid movement. No significant differences were found between liquid and paste swallows within groups. This method is simple in that it is necessary to identify only three to five points on two video images. Those values are then input onto a preprogrammed spreadsheet that automatically performs the necessary calculations. Although the present investigation focused on the movements of the hyoid bone during swallowing, this method of tracking displacement can be used for virtually any task or structure whose movements can be captured on videotape.

Acknowledgments
This work was supported by a grant from the Department of Veterans Affairs Research and Development and conducted at the VA Medical Center, Iowa City, Iowa. Note: The authors have available a spreadsheet for assessing hyoid or laryngeal movement during swallowing. The spreadsheet can be used on an IBM-compatible or Macintosh computer running Excel or Lotus.
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