Well, unless you have X-ray vision and can see how to reset your hand, you need some medical help. If it's already healed, and needs to be re-broken, it's a medical procedure... and I'm not sure I'd want to wait until I "really" broke it to try to get it fixed.

I broke my ankle and both bones in my leg in college playing basketball, and they had to wait six weeks to set my ankle because the bones in my leg had to heal first so they could set it properly. Just a minor mis-alignment caused it to break again 20 years later because it had never completely healed... so unless you want to self-destruct on the layaway plan, go find a doctor that will X-ray your hand and get you the kind of treatment that will allow it to heal properly.

What man is a man that does not make the world a better place?... from "Kingdom of Heaven"