Department of Oral Functional Anatomy, Graduate School of Dentistry, Ohu University, Koriyama, Japan.
Community Medicine Support Dentistry, Ohu University Hospital, Koriyama, Japan.
BMC Surg. 2023 Jul 12;23(1):198. doi: 10.1186/s12893-023-02100-9.
Emergency surgical airway securing techniques include cricothyrotomy, puncture, and incision. While the instruments used for these methods vary in size, no index of laryngeal morphology exists to guide instrument selection. Therefore, we measured the morphology of the cricothyroid ligament in Japanese individuals and assessed its correlations with height.
This retrospective study used 61 anatomical practice specimens. The cricothyroid ligament of the laryngeal area was dissected, and a frontal image was recorded. Next, images of the midsagittal sections of the larynx and trachea were recorded. The width and height of the cricothyroid ligament were measured from the frontal images, and the depth of the larynx and the angle to the lower edge of the cricothyroid plate were measured from the mid-sagittal cross-sectional images. The height was estimated from the tibial lengths of the specimens and statistically analyzed for correlations. RESULTS: The width and depth were significantly greater in males. Overall, there was a slight correlation between the results of each laryngeal measurement and estimated height for all items.
The morphology of cricothyrotomy revealed that the width and depth of the laryngeal area varied according to sex. Moreover, the results also showed a correlation with the estimated height. Thus, it is important to predict the morphology of the laryngeal area and cricothyroid ligament by considering factors such as patient sex, weight, and height.
紧急外科气道固定技术包括环甲切开术、穿刺术和切开术。虽然这些方法使用的器械大小不同，但没有指导器械选择的喉形态指数。因此，我们测量了日本人的环甲韧带形态，并评估了其与身高的相关性。
本回顾性研究使用了 61 个解剖练习标本。对喉区的环甲韧带进行解剖，并记录正面图像。然后，记录喉和气管的正中矢状切片图像。从正面图像测量环甲韧带的宽度和高度，从中矢状横切片图像测量喉的深度和与环甲板下缘的角度。根据标本的胫骨长度估计高度，并对其进行统计学分析以确定相关性。
男性的宽度和深度明显更大。总体而言，每个喉部测量结果与所有项目的估计高度之间存在轻微相关性。
环甲切开术的形态学表明，喉区的宽度和深度根据性别而有所不同。此外，结果还显示与估计的高度相关。因此，通过考虑患者的性别、体重和身高等因素来预测喉区和环甲韧带的形态非常重要。
