NASAL BONE DEFORMITY Definitions and clinical features While planning rhinoplasty procedures, critical pre-assessment of the nasal dimensions in all standardized views is critical. By profile, the ideal nasal projection can be defined by a ratio measuring the height of the nasal tip to the length of the nasal dorsum, which should equal 0.67. Additionally, on the lateral view or profile, the nasal dorsum should lie along or slightly lower than a line drawn from the nasion to the nasal tip. If nasal bones protrude significantly over
this line, there exists nasal bone deformity in the form of a dorsal hump (Figure 19.1).