Use of Sintered Hydroxylapatite and Inert Collagen in Middle Ear Surgery

Abstract

In the surgery of chronic otitis media with cholesteatoma, it is absolutely necessary to remove the cholesteatoma and all other diseased tissue completely. The cholesteatoma arises at the invaginated pocket of the pars flaccida of the tympanic membrane and expands gradually to the attic and the mastoid antrum in most cases. Thus it is usually required to excavate the antrum first and then to proceed to the attic. In order to accomplish a complete clearance of the cholesteatoma occupying these areas, the surgeon must reduce the party wall between the attic and the external meatus until a very thin bridge of bone remains, and not infrequently the bridge must be removed.