Erosion of Ossicles in Chronic Otitis Media
Background: Chronic otitis media may affect ossicular chain continuity with serious consequences in hearing. Ossicles are often eroded in chronic otitis media, sometimes without cholesteatoma.
Aim: This paper will assess ossicular erosion in operated ears for chronic otitis media.
Material and Methods: We reviewed 55 cases—23 females (41.8%) and 32 males (58.2%)—operated in our department with modified radical mastoidectomy and type III tympanoplasty in 24 cases (43.6%), modified radical mastoidectomy and type IV in 14 cases (25.4%), radical mastoidectomy in 2 cases (3.6%), tympanoplasty type III in 9 cases (16.3%), and tympanoplasty type IV in 6 cases (10.9%).
Results: The ossicles were eroded according to the following Table:
|Partial erosion||39 (70.9%)||38 (69%)||9 (16.3%)|
|Full erosion||10 (18.1%)||12 (21.8%)||15 (27.2%)|
|No erosion||3 (5.4%)||0||30 (54.5%)|
|Removal in surgery||3 (5.4%)||5 (9%)||1 (1.8%)|
Conclusion: As expected, incus was found eroded in most cases. However, maleus was also found eroded (partially or fully) in a similar percentage, whereas stapes was found intact in the majority of cases. This has a serious impact in surgery planning and hearing conservation surgery.