Will a lateral osteotomy narrow the nasal aperture? I have asian nose.

Lateral osteotomies can help with narrowing the wide nose. There are attachments from the nasal bone to the nasal base or ala, called pyriform ligaments, that will be moved inward. Better yet, the ligaments can be detached from the edge of the nasal bone and the nostrils can be allowed to collapse in on one another to narrow the nostrils. An added benefit of the lateral osteotomy is that 1mm or so of dorsal height can be gained. 

There are many factors that go into whether you will need lateral osteotomy to narrow  your nasal bones during a rhinoplasty. If this is indicated it will not affect your airway if properly done by an experienced rhinoplasty surgeon.   

For wide nasal bones that are obliquely oriented, lateral osteotomies will be successful in narrowing and improving the shape of the dorsum.  In some Asian patients, the dorsum is so low, and the bones so horizontally oriented, that osteotomies will not be a great choice and recreating dorsal aesthetic lines with a dorsal graft (such as a diced cartilage fascia - DCF) is the best option.  

Most Asian rhinoplasty patients do not require osteotomies but it would be nice to see your photographs. There are other maneuvers to narrow the base. You would be best served by an in person evaluation of your nose by a board certified facial plastic surgeon with expertise in Asian rhinoplasty.

In the majority of cases, osteotomies are not required  in Asian rhinoplasty, especially if there are very low bridged. For more information about osteotomies, please see the link and  the video below

It is unusual to need a lateral osteotomy with an Asian rhinoplasty.  Most Asian noses look low and wide because they do not have enough dorsal height.  When corrected with a dorsal augmentation suddenly the nose does not look wide any more.  Of course every case is slightly different so its important to examine each individual and determine what are his or her goals with the rhinoplasty.  Have an imaging device such as the Vectra 3D XT can really help the patient see how each change will look and help to plan the surgery accordingly.  That way when the proper things are done the patient is more likely to be satisfied with the results. 

Lateral osteotomies can be used to narrow the base of the nasal bridge and make the nose narrower if desired.  The  nasal base can be narrowed using Weir excisions which are frequently necessary in Asian rhinplasty.