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Updated: Apr 21, 2026

Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing
Published on: May 6, 2014
Comparison of hyoid bone position among cleft lip palate and normal subjects
Aiyesha Wahaj1, Gul-e-Erum1, Imtiaz Ahmed1
1Department of Orthodontics, Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi.
Objective:
To compare the hyoid bone position between cleft lip/palate and normal patients.
Study Design:
Cross-sectional analytical study.
Place And Duration Of Study:
Dr. Ishrat-ul-Ebad Khan Institute of Oral Health Sciences (DIEKIOHS), Dow University of Health Sciences (DUHS), Karachi, from March 2012 to February 2013.
Methodology:
The sample for this study consisted of total 68 subjects among which Group 1 consisted of 34 nonsyndromic cleft lip and palate (both unilateral and bilateral) and Group 2 included 34 subjects with normal facial morphology. Both groups included males and females with mean age 14.3±0.1 year. Analysis was done on lateral cephalometric radiographs of patients including angulations taken as Hp-Mp, Hp-Ol, Hp-Sn, Cvt-Evt, Opt-Cvt, Nke, Sn-Vert, Cvt-Vert, Sn-Vert and linear distance of hyoid bone measured as C3-H, C3-RGN, and H-RGN.
Results:
Statistically significant differences [p<0.001] in C3-H, C3-Rgn, H-Rgn, and Sn-Cvt were found between cleft lip/palate group and normal group.
Conclusion:
Hyoid bone is located anteriorly and caudally in cleft lip and palate group.
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