Ostosclerosis

Ostosclerosis is a condition whereby an abnormal bone growth occurs within the ear, hindering the free operation of the stapes bone, or “stirrup.” Since the stapes bone’s vibration normally serves to transfer sound wave impulses from the auditory canal into the inner ear so they can be interpreted by the brain, this abnormality inevitably results in hearing loss. Due to the location and physical nature of this condition, microscopic surgery must be performed in order to restore the ongoing vibrations of the stapes bone so sound waves can continue to pass through the inner ear and into the auditory nerve.

A Stapedectomy is the removal and replacement of the stapes bone, which can no longer vibrate and therefore a similarly configured prosthesis is needed in its place. This operation, which is conducted through the auditory canal, requires a very steady hand and extremely sharp vision.

1) A local or general anesthetic is applied, depending on the patient and the particular situation.
2) Through the use of an ultra-fine instrument, approximately half of the tympanic membrane (eardrum) is flipped back so the surgeon can gain access into central part of auditory relay where the manubruim (“hammer”), incus (“anvil”), and stapes bone (“stirrup”) are situated.
3) The upper section of the stapes bone is severed from the incus and separated from the tiny bone’s footplate. A hole is drilled via a microscopic laser into the footplate, and a prosthetic appendage, or “piston,” is fitted through the hole to secure it tightly to the end of the incus to prevent it from falling off.
4) The constructed stapes bone replacement is then reset inside the opening to the inner ear where it will eventually begin vibrating again within time.

Post-operative behavior includes no pressure whatsoever on the equilibrium, which is maintained within the inner ear. No water goes in the ear, meaning that swimming is out-of-the-question and showers are to be conducted with lubricated cotton snug firmly in the operated ear. No nose-blowing or sneezing allowed unless it can’t be helped, and no lifting anything weighing in excess of twenty pounds. Should hearing loss, pain, disorientation, lightheadedness, or other disconcerting symptoms occur, contacting a doctor immediately is not only a mandatory step, but an obvious one. All of these very wise recommendations are instituted for a period of approximately two following the surgery. A Stapedectomy is performed on an outpatient basis.

Those who suspect they might have a temporal bone disorder of any kind should see a certified specialist immediately. Hearing is far too important to take lightly.