MULTISTAGED SURGERY OF CONGENITAL MIDDLE AND EXTERNAL EAR ANOMALY (MICROTIA SYNDROME)

KZ Borisova, H. Borisova

Postgraduate Medical Institute

Novokuznetsk, Russia

Twenty three children aged 3 to 12 years with severe ear anomaly including rudimentary auricle, absent external auditory canal, defective tympanic cavity and middle ear ossicles ( 15 unilateral, 8 bilateral) have been operated on in our clinic between 1989-1996.

The first stage of surgery included formation of external auditory canal in monolyth of temple bone, tympanoplasty and initial auriculoplasty with ear lobe transposition. The next auriculoplasty consisted of transplantation of free autograft above the aperture of meatus, insertion of porous Ni-Ti wire outline as a framework of auricle and behind -the-ear pleat formation. The surgery has been done on one ear in bilateral cases. Permenant and fully covered with epidermis ear canal was achieved in 2-3 months. All the patient had a follow-up from 1 to 6 years after surgery. 20 patients showed good anatomical results, 11 of them presented functional success. For better child’s communication we used in-the -ear hearing devices in the cases of bilateral microtia.