Nasal septum is a membrane that divides airway in nose into two.
Cartilage is harvested from the septum and use it to extend nose and support nose tip.
Since it is not absorbed easily and from own body, it does not cause infection and rejection reaction.
Furthermore, a deviated nasal septum can cause breathing difficult, and this procedure can solve such problem as well.
However, nasal septum cartilage is scarce and is not enough to be used alone.