The study was conducted to find out the status of ossicular chain in case of chronic suppurative otitis media. 85 patients of chronic suppurative otitis media who underwent tympanomastoid surgery for the same were included in the study and their intra operative ossicular chain status was noted. Out of total 85 patients 65(83.33%) cases were found to be atticoantral disease and 20(11.36%) cases to be tubotympanic disease. Malleus was found to be the most resistant ossicle for erosion. It was involved in 20(30.77%) in cases of atticoantral disease and 6(30%) in cases of tubotympanic disease. Incus was the most common ossicle to be involved in either variety of CSOM. Long process of Incus was most commonly eroded part of Incus 42(64.46%) in atticoantral disease. It was followed by body of Incus 15(23.08%) and erosion of entire Incus 12(18.46%). Stapes was not involved in any case of tubotympanic disease in our study while in atticoantral disease Stapes suprastructure was partially eroded in 14 (21.54%) cases and suprastructure was absent in 10 (15.38%) cases. Thus destruction of ossicular chain was more common in patients with chronic suppurative otitis media with atticoantral disease as compared to chronic suppurative otitis media with tubotympanic disease. Incus was found to be most susceptible while malleus wasleast susceptible to erosion.
