![]() The Sphincteric Mechanism of Velopharyngeal Closure. Passavant’s Ridge: Is It a Functional Structure? Ear Nose Throat J. Intraindividual Change in the Occurrence of Passavant’s Ridge due to Change in Velopharyngeal Sphincter Function: A Videofluoroscopic Study. Nasopharyngeal Profile and Velopharyngeal Valve Mechanism. 46: 1-32 (1868)Ģ. Finkelstein YMD, Lerner MAMD, Ophir DMD, Nachmani AMA, Hauben DJMD, Zohar YMD. : Uber die Verschlie~ungdesSchlundesbeim Sprechen.Virchows Arch. Some patients with a marked deficiency in the velar component of velopharyngeal closure will exhibit an apparent compensatory increase in the movement of the pharyngeal component of closure, which in some cases can manifest as a development of Passavant's ridge.They showed that some individuals have more lateral pharyngeal wall motion than others, some have Passavant’s ridge, and that this variability of movement is true for both people with VPI and with normal velopharyngeal function. ![]() argued that velopharyngeal competence relies on sphincteric movement with both velar and pharyngeal components
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