Croft C B, Shprintzen R J, Rakoff S J
Laryngoscope. 1981 Feb;91(2):265-71. doi: 10.1288/00005537-198102000-00015.
The mechanism of velopharyngeal valving in normal subjects and patients with velopharyngeal insufficiency (VPI) has been the subject of keen debate. The authors have studied 80 normal subjects and 500 patients at the Center for Craniofacial Disorders using direct nasopharyngoscopy and multi-view videofluoroscopy to ascertain the patterns and mechanism of velopharyngeal valving. Multiple patterns of valving were found in both populations and were characterized as "coronal," "sagittal," "circular," and "circular with Passavant's ridge." The incidence of the differing patterns of closure were surprisingly similar in frequency in both normal and pathologic populations. The importance of these diagnostic methods is discussed in relation to treatment of patients with VPI, particularly in designing the type and level of pharyngoplasty.
正常受试者和腭咽功能不全（VPI）患者的腭咽闭合机制一直是激烈争论的话题。作者在颅面疾病中心对80名正常受试者和500名患者进行了研究，采用直接鼻咽镜检查和多视角视频荧光透视法来确定腭咽闭合的模式和机制。在这两组人群中均发现了多种闭合模式，其特征为“冠状”“矢状”“环状”以及“伴有帕萨万特嵴的环状”。正常人群和患病群体中不同闭合模式的发生率在频率上惊人地相似。文中讨论了这些诊断方法对于VPI患者治疗的重要性，特别是在设计咽成形术的类型和水平方面。
