喉内结构在甲状软骨板上的投影位置关系

Study on the relationship among the projective positions of interior laryngeal structure on thyroid ala

目的:为临床上经喉外入路行喉部手术提供喉内结构定位解剖学依据。方法:直视下穿针法定出19具男性及11具女性成年喉软骨架标本的杓状软骨肌突及声带在甲状软骨板上的投影,观测各结构投影的位置关系。结果:声带投影线为过前连合线的中点稍上(男1.0mm,女0.5mm)连接甲状软骨板后缘上3/4与下1/4交点的连线,且与甲状软骨前缘成65rad;肌突投影点位于声带投影线上;梨状窝投影位于甲状软骨板后上部。结论:喉内结构在甲状软骨板上的投影有较为固定的位置关系,为临床上行喉骨架外科声带相关手术提供了解剖参考。

Objective：To provide anatomic basis of locations of laryngeal interior structures for laryngeal operating through lateral laryngeal approaches in clinic. Method： Thirty cadavers laryngeal cartilage specimens（ 19 male and 11female）was collected. Using pin pierced method under direct vision to locate the projections of muscle process of arytenoids cartilage and vocal fold on thyroid ala,then to observe their relationships. Result：The projection of vocal fold is the line that connecting a little bit superior of the middle point of anterior commissure of thyroid cartilage and the point on the crosspoint of superior 3/4 and inferior 1/4 of the posterior edge of thyroid cartilage ala. The angle of the line and anterior commissure of thyroid cartilage is sixty-five degrees, The projection of muscle process is locating on the projective line of vocal fold. The projection of pyriform fossa is locating at the posterior superior portion of thyroid cartilage ala. Conclusion： The interior structures of larynx have a intact relationship of projective position on thyroid cartilage ala,which providing anatomic references for clinical surgeries relating to vocal fold through laryngeal framework.