Septoplasty Vs Rhino-septoplasty for Deviated Septum?

Unfortunately septoplasty alone will not reduce the bump on your bridge (dorsal hump reduction).  The septum can be straightened and your breathing improved without altering the appearance of your bump.  Rhinoplasty with septoplasty (septorhinoplasty) will address both the septum and the dorsal hump.   

While correction of a crooked nose may often require both a septoplasty & rhinoplasty, this is not always the case.  Sometimes, for example, after a relatively recent fracture of the nasal bones (within the last several years), it will be a bony deformity that causes the crookedness rather than any deviation of the nasal septum on the inside.  In this case, a rhinoplasty will be required instead of a septoplasty to straighten the crooked nasal bones. 

Commonly in more long-standing nasal deformities, the cartilage of the nasal septum is also involved.  A nasal septum problem may be identified in one of two ways.  One, deviation of the nasal septum inside the nasal airway often contributes to nasal airway obstruction.  While this obstruction, which causes difficulty breathing, may be on both sides of the nose, a deviated septum will often produce obstruction on one side only.  Hence, nasal airway obstruction would be a very good indicator of the need for a septoplasty as well as a rhinoplasty to straighten a crooked nose. 

Secondly, if the crookedness is closer to the tip of the nose, by looking in a mirror you can often quite easily see the crookedness of the cartilaginous divider in the middle of the nose, contributing to that crookedness.  In this case, a septoplasty will certainly need to be combined with a rhinoplasty to correct the problem.  A septoplasty alone, however, will rarely correct a crooked nose all by itself.

A septoplasty is a surgery performed to correct a deviated (or crooked) septum. A true "septoplasty" does not involve changing the shape of the nose. 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. It is infrequent that a septoplasty alone will correct external crookedness.
For a nose that is crooked on the inside and the outside, a septorhinoplasty (in which both the septum and the nasal framework are corrected) may be required. This involves reconstructing the nasal framework, correcting a deviated septum, and often surgically-breaking the nasal bones (osteotomies).
Your best bet is to visit with one or more rhinoplasty specialists to make sure that your diagnosis is correct