What is the role of the nasal valve in nasal aerodynamics?

Updated: Jul 13, 2021
  • Author: Samuel J Lin, MD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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The nasal valve is an important consideration in rhinoplasty. In particular, 2 incisions have great potential to change the dynamics of the valve. The intercartilaginous incision and the disarticulation of the upper lateral cartilage from the septum have the potential to increase nasal resistance. If the upper lateral cartilages are excessively medialized, narrowing of the middle nasal vault obstructs the internal nasal valve. [34]  The caudal aspect of the upper lateral cartilage should not be excessively trimmed. The nasal valve functions by moving into the vestibule as airway resistance increases. This movement is hampered when insufficient mucosa remains for coverage of the caudal aspect of the upper lateral cartilages. During alteration of the lower lateral cartilages, care should be taken not to resect too much of the most caudal aspect of the cartilage. [31] Overresection in this area leads to alar collapse and nasal obstruction.

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