Hyoid displacement patterns in healthy swallowing

ABSTRACT Objective To describe the patterns of displacement of the hyoid bone in healthy individuals, considering their displacements during swallowing of different consistencies. Methods Two hundred one swallowing videofluoroscopy exams of 67 adult and elderly individuals without swallowing disorders were analyzed. Descriptive analysis was performed to identify and describe the patterns of displacement of the hyoid bone. Results Seven types of displacement of the hyoid bone were found: H1 (horizontal), H2 (short vertical and long horizontal), H3 (vertical and diagonal to upper), H4 (long vertical and short horizontal), H5 (vertical), H6 (diagonal), and H7 (brief). The standards were maintained in different consistencies. The most frequent pattern of displacement was type H2. The distribution of the types of displacement of the hyoid was different among men and women. Conclusion Seven patterns of displacement of the hyoid bone during swallowing of normal adults and older people have been described. The most frequent pattern of displacement was horizontal, with variations in distribution between men and women. The displacement pattern was maintained during the swallowing of the three different consistencies (thin, pasty and solid liquid).

摘要
研究目的：旨在描述健康个体在吞咽不同稠度食物过程中的舌骨移位模式。
研究方法：对67名无吞咽障碍的成人及老年个体的201例吞咽视频荧光透视检查结果进行分析，采用描述性分析方法识别并阐明舌骨的移位模式。
研究结果：共发现7种舌骨移位类型：H1（水平型）、H2（短垂直长水平型）、H3（垂直伴向上斜行型）、H4（长垂直短水平型）、H5（垂直型）、H6（斜行型）、H7（短暂型）。所有移位模式在不同稠度的吞咽场景中均保持稳定；其中H2型为最常见的移位模式；不同性别间的舌骨移位类型分布存在差异。
研究结论：本研究明确了正常成人及老年个体吞咽过程中的7种舌骨移位模式，最常见的移位模式为水平型，且不同性别间的移位类型分布存在差异；在稀流质、糊状及固态流质三种不同稠度的吞咽过程中，舌骨移位模式均保持稳定。