Does Rhinoplasty Make Nose More Likely to Break in the Future?

The answer is, once the bones have healed after 6 weeks, it is unlikely that your nose will break any easier than it would have prior to the rhinoplasty.   In general, after rhinoplasty you will want to be careful of any injury to your nose, as this may change the shape of other components of the nose. 

Not all rhinoplasty procedures require bone cuts (osteotomy) but most do. Any wound or scar is never really as strong as the original tissue. In general wounds tissue has about 80% of the strength of normal tissue whether it be in skin, muscle, or bone. I have read it takes about 7 pounds of force to break a nose. Therefore it should take about 5.6 pounds of force to break a repaired nose.