The causes of respiratory trouble that are most commonly seen in rhinoplasty patients are those related to the septum and the turbinates. The air we breathe enters through two holes, known as nostrils, which are extremely important for the first phase of breathing (inspiration). In this area, there are two structures known as nasal valves that act essentially as airflow restrictors. Alterations in these valves are often the cause of respiratory difficulties and even aesthetic abnormalities that lead people to consider rhinoplasty.
If we look inside the nostrils we can visualize two structures: the internal and the external valve.
The external valve is formed by the area bordered by the lateral arms of the alar cartilage, the internal arms of the alar cartilages (the columella), the septum, and the floor of the nasal fossae.
The internal valve is formed by the area bordered by the upper lateral cartilage (also known as triangular cartilage), the nasal septum, the head of ..