When is my Nose Bone Strong Enough to Not Break Easily After Rhinoplasty?

This is a great question. After 2 weeks the bones will no longer be able to be moved with direct pressure. However they won't yet be strong. In fact they never regain their original strength. They will be strong enough to withstand a reasonable bump after 2 months.

I tell my patients that they can resume their normal activities (including those that may cause minor nasal trauma) about 6 weeks after the surgery because as you correctly pointed out bones heal in about 6 weeks.  

Your nose will never be as durable as it was before your surgery. But your osteotomies heal rather quickly: usually in around 2 weeks. In my practice, there are no limitations on physical activity 3 weeks after Rhinoplasty Surgery. You should, however, be cautious not to traumatize your new nose.

I hope this is helpful for you.

Regards from NJ.

Usually by 4 weeks the bones are healed enough to withstand minimal trauma without shifting or re-breaking it.

At 8 weeks out from rhinoplasty surgery, or a nosejob, you should have fairly good stability of your nasal bones. It is usually sufficiently strong to resist minor pressure. But don't get a false sense of security. If you had other reshaping of the nose, such as tip work or cartilage grafting, these areas are still quite susceptible to minor traumas. As always, make sure you discuss things in detail with your rhinoplasty surgeon. Good luck and happy healing.