TY - JOUR
T1 - Influence of craniofacial morphology on hyoid movement
T2 - A preliminary correlational study
AU - Mays, Keith A.
AU - Palmer, Jeffrey B.
AU - Kuhlemeier, Keith V.
N1 - Funding Information:
This work was completed at the Department of Physical Medicine and Rehabilitation, Good Samaritan Hospital, Johns Hopkins University, Baltimore, Maryland. The work was supported in part by award Nos. T32 DE07309 from the NIDCR/NIH and R01 DC002123 from the NIDCD/NIH. The authors would like to thank Chune Yang for providing technical assistance, and the late Dr. Karen Hiiemae for her assistance in collecting data and planning this project.
PY - 2009/3
Y1 - 2009/3
N2 - 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° ± 4.08° (mean ± SD, range = 20°-34°). A Pearson correlation (≤0.05) demonstrated that hyoid forward displacement was significantly inversely correlated with the FMA [R = -0.68, p = 0.015 (12 ml) and R = -0.72, p = 0.009 (24 ml)]; thus, the greater the FMA, the smaller the hyoid forward displacement. Upward displacement of the hyoid was not significantly correlated with FMA for 12-ml (R = -0.41, p = 0.55) or 24-ml swallows (R = 0.21, p = 0.512). In addition, there was no significant correlation between hyoid starting or ending positions. In conclusion, the results of this preliminary study suggest that normal variations in morphology, as measured by the FMA, may influence hyoid movement and therefore affect swallowing physiology.
AB - 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° ± 4.08° (mean ± SD, range = 20°-34°). A Pearson correlation (≤0.05) demonstrated that hyoid forward displacement was significantly inversely correlated with the FMA [R = -0.68, p = 0.015 (12 ml) and R = -0.72, p = 0.009 (24 ml)]; thus, the greater the FMA, the smaller the hyoid forward displacement. Upward displacement of the hyoid was not significantly correlated with FMA for 12-ml (R = -0.41, p = 0.55) or 24-ml swallows (R = 0.21, p = 0.512). In addition, there was no significant correlation between hyoid starting or ending positions. In conclusion, the results of this preliminary study suggest that normal variations in morphology, as measured by the FMA, may influence hyoid movement and therefore affect swallowing physiology.
KW - Deglutition
KW - Deglutition disorders
KW - Fluoroscopy
KW - Hyoid bone
KW - Mandible
KW - Mandibular rest position
KW - Stomatognathic system
UR - http://www.scopus.com/inward/record.url?scp=66349088816&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=66349088816&partnerID=8YFLogxK
U2 - 10.1007/s00455-008-9176-x
DO - 10.1007/s00455-008-9176-x
M3 - Article
C2 - 18716836
AN - SCOPUS:66349088816
SN - 0179-051X
VL - 24
SP - 71
EP - 76
JO - Dysphagia
JF - Dysphagia
IS - 1
ER -