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目的：为提高全喉切除术后患者用发音管发音重建的成功率，选择最能影响发音重建成功的咽下缩肌进行研究。方法：对４０具正常成人尸体标本咽下缩肌的解剖结构进行了详细的观察和测量。测量咽下缩肌各起点处的宽度，在甲状软骨板后缘的厚度；止点的长度；环咽肌后壁的测量；并用组织切片法观察咽缝的结构。结果：发现咽下缩肌不仅有起于甲状软骨和环状软骨的肌纤维，而且有起于第１气管环的肌纤维和肌腱。咽缝不是呈线状，而是呈条带状。结论：对发音重建行咽缩肌切断术有重要的临床意义。
OBJECTIVE: To improve the success rate of vocal reconstruction in patients undergoing total laryngectomy, select the most commonly used vasomotor muscle for vocal reconstruction. Methods: The anatomical structure of the pharyngeal constrictor of 40 normal adult cadaver specimens was observed and measured in detail. Measurement of the width of the starting point of the swallowed muscle, the thickness of the posterior edge of the thyroid cartilage plate; the length of the dead point; measurement of the posterior wall of the cricopharyngeal muscle; Results: It was found that not only the muscle fibers of thyroid cartilage and cricoid cartilage, but also the muscle fiber and tendon of the first tracheal ring. Pharyngeal seam is not linear, but was strip. Conclusion: The reconstruction of pharyngeal pharyngeal muscle reconstruction has important clinical significance.