mastoid obliteration operation
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mastoidectomyA procedure used to close a persistently discharging mastoid cavity, which does not improve with regular cleansing and antibiotics, as a way of eliminating mastoid infection and obliterating or filling a previously created mastoid cavity.
An incision is made behind the ear; the lining of the mastoid cavity is elevated and, if there is residual infection, the infected bone is curetted and the cavity filled with hydroxyapatite granules and covered with cartilage and skin flaps to create a healthy ear canal. The procedure may require reconstruction of eardrum with cartilage and the native ossicular chain replaced with a titanium graft. The ear is then packed with ribbon gauze and soaked with antiseptic paste to keep the graft in place until it heals.
85% of patients have dry, trouble-free ears; 60% hear better.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
mastoid obliteration operationENT An operation to eradicate disease when present and obliterate a mastoid or fenestration cavity
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.