咽缩肌神经的形态特点及其临床意义

The morphologic characteristics and clinicJ significance of the nerves to the constrictor muscle of pharynx

在１２例（２４侧）儿童头颈部标本上观察了咽缩肌神经的起源、走行和分支分布。支配咽缩肌的神经为舌咽神经和迷走神经的分支混合组成，其主要组成平面在舌骨大角之上１．６±０．４ｃｍ。咽缩肌神经位置较为恒定，分支相对规则，两侧基本对称，其终末支通常有三种形式，位于舌骨大角平面上３．０±０．２ｃｍ。根据肌的神经分布特点，提出了蒂在上的改良咽后瓣手术的切口设计。

he innervation of the constrictor muscle of pharynx was observed on both sides of 12 childcadavers.The pharyngeal plexus is formed at the level of 1.6±0.4 cm above the greater horn ofhyoid by the branches from the glosspharyngeal and vague nerves,and terminated 3.0±0.2cmabove the greater horn level in three types,From the.plexus tiny constant and symmetric branch-es rise to the constrictor muscle of pharynx,An improved retropharyngeal flap with an upsetpedicle was designed.