Radix: Definition and Analysis

The deepest point of the nose (where the upper nose joins the forehead) is the radix, which is both the root and the starting point of the nose. “Radix” is a clinical definition. Other structures of the nasal root, such as the nasofrontal suture and sellion, are anatomical definitions that do not correspond to the radix; we do not need to know these structures. When analyzing the nose, it is necessary to commence at the radix; this is the starting point of the nasal structure. Radix position and height determine the nasal profile. If this is to be ideal (well-proportioned), the radix must be in the right place. Meticulous analysis is necessary using two descriptive parameters.