This definitely won't help the bone part of your nose. The bone is fair game.

I have seen the cartilage get separated from the bone, and though that may not be as bad as the actual bone breaking, it's still no good. And this is usually the part of the nose that hurts the next day I find... where the cartilage and bone meet.

It's worth a try... worse case scenario is you got flexible cartilage that you can gross your friends out with. And it may just help you out as it has me.