For post-traumatic nasal deformities, particularly ones in which both the nasal bones and the septum are crooked, a septorhinoplasty (in which both the septum and the nasal framework are corrected) may be required. A septoplasty alone will not straighten the external crooked portion of your nose. A Rhinoplasty would address the external deviation.
Rhinoplasty is a purely cosmetic procedure that is designed to improve the appearance of the nose.
Septoplasty is a surgery performed to correct a deviated septum. The septum is the piece of cartilage that separates one side of the nose from the other. Normally, the septum is straight. When it is crooked, it is termed a deviated septum. A deviated septum can block the nasal passage and contribute to symptoms of nasal obstruction.
Correction of a deviated septum with a septoplasy involves making an incision on the inside of the nose. The skin covering the septum is lifted off the cartilage and the deviated setpum (intranasal part only) is either removed or reshaped to make the breathing passages more open.