Can a Hit Cause a Permanent Dorsal Hump?

Injury to the bridge of the nose can cause a small dorsal hump even without breaking the bones.  This can result from the upper lateral cartilages and septum getting separated from the bone and 'falling in' thus making the bony part of the nose appear to be sticking out.  This can be corrected with cartilage grafting.

It is possible, depending on the impact of the hit, to cause a permanent dorsal hump by a trauma to the nose. It is common to see swelling immediately after an injury to the nasal bones; however, if irregularity persists, a rhinoplasty may be necessary for cosmetic improvement. Please consult with a board certified plastic surgeon with tremendous experience with rhinoplasty surgery.  

Trauma to the nasal bridge can cause a nasal hump even without a fracture. There is always the possibility of a bony fracture however. If the nasal bridge is broken, the deformity will be even more prominent after the swelling is gone. The other option would be that the nasal cartilages would be broken. Whatever the case is, you should wait one should wait for the edema to resolve and then decide on any corrective aesthetic surgery if the deformity is prominent.

Hope this helps,Ali Rıza Öreroğlu, MD FEBOPRASEuropean and Turkish Board Certified Aesthetic, Plastic and Reconstructive SurgeonIstanbul, Turkey