the very best, basic way to actually be able to even tell this would be to see bone upon a scan, and that would be a good series X ray or even a good CT? but usually when anyone has actually suffered ANY level of real fracture, you most certainly can tell even with just x ray by the way the bone actually heals(even with very old ones). it does kind of leave behind its own form of 'scarring' where the two places 'knit' back togehter again? other than that, i seriously would not think there could really be any other way than actually seeing that bone with the scans and then a good radiologist reading the hardfilms(thats pretty standard). they would then issue a report on it that would then simply be sent to whoever the ordering doc was who referred you for it or had it done? then its a matter of seeing your doc for the results.
is there a particular reason that any 'old' fractures are just really needing to be known about or are you just wondering here? only part of our nose is actually bone and its not as much as you would probably might think actually(the "bridge" of the nose and down the sides closest to the face). the rest is more cartiledge? FB