Depending on the type of pathology, the results vary in the extent of the lesion. Running ear: The tympanic repair efficiency is around 90% and a healed dry ear is obtained after surgery. Hearing status: Postoperative hearing recovery depends on a variety of factors, especially the degree of preoperative auditory bone destruction and postoperative ear wound healing. For the osteoclastic and cholesteatoma types, removal of the lesion is most important, followed by promotion of a dry ear. It is usually possible to achieve nearly 100%. Hearing problems need to be analyzed on a case-by-case basis. Surgery for extensive cholesteatoma or middle ear infection is more challenging and the goal of the procedure is to clear the infection and get a dry, safe ear. On top of this, hearing is reconstructed. Sometimes, a second surgery is required, the first to remove the infection and repair the eardrum. The surgery is usually done under general anesthesia and the patient returns to normal work about two weeks after the surgery. If necessary, a second surgery is performed six months to a year later to reconstruct the hearing and check for residual cholesteatoma. Sometimes the lesion is so severe that only a mastoid root can be performed to control the infection, at which point hearing will be lost.