All of the following are causes of this conditionas shown in image except
- Depressed nasal dorsum may involve either bony, cartilaginous or both bony and cartilaginous components.
- Most common etiology : Nasal trauma.
- Other causes:Septal hematoma, excessive surgical removal, trauma, syphilis, abscess, Leprosy, tuberculosis ,polychondritis, granulomatosis with polyangiitis, cocaine abuse,
- It can usually be corrected with augmentation rhinoplasty by filling the dorsum of nose with cartilage, bone or synthetic implant.
- If the depression is only cartilaginous, cartilage is taken from the nasal septum or auricle and laid in single or multiple layers.
- If deformity involves both cartilage and bone, cancellous bone from iliac crest is the best replacement.
- Autografts are preferred over allografts.
- Saddle deformity can also be corrected by synthetic implants of teflon or silicon, but they are likely to be extruded.