Figure 1: Classification of septum deviation (from Sciuto and coworkers): A: Horizontally, parallel to the premaxilla running deviation of the lamina quadrangularis. B: Vertically running deviation of the lamina quadrangularis. B 1 : Caudal-vertically running deviation inferiorly to the insertion of the upper lateral cartilages. B 2 : Mid-vertically running deviation with the axis in the area of the insertion of the upper lateral cartilages. B 3 : High-vertically running deviation with the axis in the area of the bony nasal dorsum. C: Combined deviation of A and B.