Can a Broken Nose Be Reset Years After Being Broken?

Typically, we try to reset the bones before they've healed. After that, the surgery essentially becomes a rhinoplasty. The specific maneuvers needed will depend on the individual nose. This may include a combination of breaking/resetting the bones and camouflage techniques (using grafts, etc).
Best of luck to you.

The short answer is. Yes.  A nose that was broken years ago can be fixed.  This is not a quick closed reduction procedure (which is what doctors usually refer to when they talk about resetting the nose).   It would likely require a rhinoplasty to be fixed to help improve symmetry, appearance and breathing.  You should find an ENT who has additional fellowship training in facial plastic surgery and had experience and feels comfortable performing reconstructive rhinoplasty. 

So when you break your nose you have a small window of about 10 days to do a closed reduction which basically means gently shift the bones back into position.  If you miss that window then you need to wait till they heal and then the bones need to be refractured and repositioned.  This is what you need and it can be done at anytime after a fracture once the bones are healed.

When the nasal bones initially break from injury, there is about a 2 week window where they are easily mobile and can be pushed back into position without any incisions.  After this period, the bones are re-fused and repair requires "re-breaking" them.  This process is accomplished with osteotomies and entails rhinoplasty surgery.  If you are unhappy with the altered shape of you nose from an old injury, it is probably best to consult with a rhinoplasty specialist.

The duration of your broken nose is not a determining factor on whether or not a rhinoplasty can be performed. Many patients wrongfully assume that there is a set time period during which time a nose job will be most effective, but this is untrue. Because the nasal bones can become re-fused in a way that results in difficulty breathing or crookedness, a nose job can be very beneficial. A qualified plastic surgeon can perform a rhinoplasty on a broken nose no matter how long ago the trauma was experienced. 

Yes, it is possible to fix your nose so many years after it was broken. Many patients have had great success correcting nose trauma even decades after the experience. Best of luck!