Evaluating the Structural Properties of Suprahyoid Muscles and their Potential for Moving the Hyoid
Evaluating the Structural Properties of Suprahyoid Muscles and their Potential for Moving the Hyoid
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DOI：
10.1007/s00455-010-9315-z
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发表时间：
2011-12-01
期刊：
影响因子：
2.6
通讯作者：
Zumwalt, Ann C.
中科院分区：
文献类型：
--
作者：
Pearson, William G., Jr.;Langmore, Susan E.;Zumwalt, Ann C.
上级和前舌骨运动是咽吞咽的重要事件。这项横断面研究使用尸体模型来记录这些运动背后的肌肉的结构特性，以了解它们的形态如何影响功能。测量，以确定吞咽肌肉的生理横截面积（PCSA）取自半切的头部和颈部福尔马林固定的尸体标本（n = 13）。使用肌肉附着部位和PCSA的坐标计算（i）过帽和（j）过帽单位力向量，其中（i）过帽和（j）过帽分别代表前后和上下方向。将舌骨上肌子样本分组进行分析，如下所示：二腹肌（DG）、颏舌骨肌（GH）、下颌舌骨肌（MH）和茎突舌骨肌（SH）。单位力矢量的ANOVA和Tukey HSD事后分析显示了以下结果：GH（-0.44 +/- 0.15 cm（2））[MH（-0.02 +/- 0.21 cm（2）），DG（-0.05 +/- 0.11 cm（2）），SH（0.14 +/- 0.04 cm（2）），负值代表前向（p < 0.01）;和MH（0.91 +/- 0.28 cm（2））[DG（0.29 +/- 0.14 cm（2）），SH（0.22 +/- 0.08 cm（2）），GH（12 +/- 0.08 cm（2）），正值代表上级方向（p < 0.01）。舌骨上肌的形态表明，基于结构特性，颏舌骨具有最大的潜力，以取代舌骨在向前的方向和下颌舌骨具有最大的潜力，以取代舌骨在上级方向。这些数据与生理学发现相补充，可能为那些开发吞咽困难新疗法的人提供对这些运动的更深入了解。
Superior and anterior hyoid movements are important events in pharyngeal deglutition. This cross-sectional study uses a cadaver model to document the structural properties of the muscles underlying these movements in an effort to understand how their morphology influences function. Measurements to determine physiological cross-sectional areas (PCSAs) of swallowing muscles were taken from hemisected head and neck formalin-fixed cadaver specimens (n = 13). Coordinates of muscle attachment sites and PCSAs were used to calculate (i) over cap and (j) over cap unit force vectors, where (i) over cap and (j) over cap represent anterior-posterior and superior-inferior directions, respectively. The suprahyoid muscle subsamples were grouped for analysis as follows: digastric (DG), geniohyoid (GH), mylohyoid (MH), and stylohyoid (SH). The ANOVA with Tukey HSD post hoc analysis of unit force vectors showed the following results: GH (-0.44 +/- 0.15 cm(2)) [MH (-0.02 +/- 0.21 cm(2)), DG (-0.05 +/- 0.11 cm(2)), SH (0.14 +/- 0.04 cm(2)), with negative values representing the anterior direction (p < 0.01); and MH (0.91 +/- 0.28 cm(2)) [DG (0.29 +/- 0.14 cm(2)), SH (0.22 +/- 0.08 cm(2)), GH (12 +/- 0.08 cm(2)), with positive values representing the superior direction (p < 0.01). The morphology of the suprahyoid muscles suggests that based on structural properties, the geniohyoid has the most potential to displace the hyoid in the anterior direction and the mylohyoid has the most potential to displace the hyoid in the superior direction. These data in complement with physiological findings may provide greater insight into these movements for those developing novel treatments for dysphagia.