No, there really is not any significant possibility of cartilage shifting after the repair of a broken nose but there are certainly circumstances where the cartilage and bone have been altered such that there will be persistent asymmetry after the repair of a broken nose. Classically, a broken nose involves the fracture and displacement of the nasal bones, one typically being depressed and one being pushed out from its normal location. During repair of a broken nose, the depressed nasal bone is elevated and the displaced nasal bone is then pushed towards the midline so that they essentially lock back together again, and they create a midline appearance and symmetry to the nose that was present prior to the injury. In certain circumstances, however, the cartilage just below the bone can be avulsed or separated from the nasal bone itself, and this may not be recognized during the initial evaluation. The nasal bones can thus be reduced and placed back into their proper anatomic location but, due to the fact that the cartilage has been separated from the bone, there may still be a depression on one side or the other due to this dislocation of the cartilage from the nasal bones themselves. This can be extremely difficult to analyze immediately after the injury due to the fact that there is typically some minor residual swelling but also due to the fact that the nasal bone itself is depressed and displaced and it is, therefore, very difficult to appreciate whether the cartilage is displaced relative to the bone or if the cartilage is just displaced due to the fact that the bone is malpositioned. There really is no good way to try to correct the displaced nasal cartilage anyway and, for the most part, I tend to treat the nasal bony fracture and, should there be a resulting cartilaginous displacement, this can be addressed at a later date and, unfortunately, a second surgery. I feel that an evaluation by a very experienced rhinoplasty surgeon would be very beneficial for anyone who has undergone treatment of a broken nose and yet still has unexpected consequences.
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