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Mirko Tos, MD

Arch Otolaryngol. 1974;99(6):422-427.

Abstract
Of 686 patients who underwent tympanoplasty, 45 had nonotosclerotic bony fixation of the ossicular chain (malleus, 17; incus, 10; stapes, 4; malleus and incus, 11; all ossicles, 1). Two patients had bony fixation of autografts. The incus and malleus may be fixed in various sites in the epitympanum. The most common causes were cholesteatoma and sequelae of otitis, in particular, of mastoidectomy. Bony fixation was also found as a mild solitary congenital anomaly, in atresia of the auditory meatus, traumatic ossicular dislocation due to fracture of the petrous portion of the temporal bone, tympanosclerosis, chronic adhesive otitis media, and chronic granulating otitis.

Author Affiliations
Copenhagen

From the ear, nose, and throat departments, the Glostrup and the Gentofte Hospitals, Copenhagen.

Footnotes
Accepted for publication April 20, 1973.

Reprint requests to the Ear, Nose, and Throat Department, Gentofte Hospital, 2900 Hellerup, Copenhagen (Dr. Tos).

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