Figure 3.

Palatal phenotypes and pattern of collapse are shown. (A) Oblique pattern demonstrates a less acute alpha (α) angle with airway size larger in an anterior posterior dimension at the hard palate, genu (*), and velum; shape is more circular and collapse pattern is circular. (B) Intermediate pattern demonstrates a less acute alpha angle (α) but narrowing at the genu (*) and velum. (C) Vertical pattern has a more acute alpha (α) angle with narrowing of the airway at the genu (*) and velum; airway shape is coronal and collapse patter is flat (anterior posterior).