Its impossible to say anything about the extent, as it is all individual, one person can regenerate completely, another show no reactions at all on a well chosen remedy.
You cant give homeopathy allopathic comparision in that way, its impossible.
Remedies used, is tub (neprhities), apis,alumina, caust, cortizone,plumb, etc, it differs from patient to patient. Tip: most patients suffering from this, has damages from cortizone,antibiotics or other allopathic remedies, or from heavy metals, today only a few from a disease of natural origins.