Abnormal nasal dorsum morphology Concave nasal ridge 2011-06-12T09:39:55Z UMLS:C0264169 Concave nasal dorsum Saddle shaped nasal dorsum A saddle-nose deformity can be congenital or acquired (e.g., traumatic) and is associated with structural compromise of the nasoseptal cartilage leading to decreased dorsal nasal structural support. A depression of the dorsum of the nose with loss of nasal tip support and definition, shortened (vertical) nasal length, overrotation of the nasal tip, and retrusion of the nasal spine and caudal septum. Boxer's nasal deformity Concave dorsum of nose Boxer's nose deformity Ski jump nose Saddle nose HP:0011120 SNOMEDCT_US:710234009 Nasal ridge curving posteriorly to an imaginary line that connects the nasal root and tip. Saddle nose deformity