Most conductive losses are repairable.
Nerve loss on the other hand is usually not repairable. However, there are exceptions .Such as Cochlear Implantation . Success depends almost as much on the ability of the body to heal and preserve the reconstruction as it does on the surgeon's skill. Fortunately, even those cases that fail may be revised and have the same high degree of expected good result. There are, nevertheless, some complications that do occasionally occur.