BACKGROUNDThe objective of this study was to determine the incidence of ossicular chain erosions in patients suffering from chronic otitis media, mucosal type. MATERIALS AND METHODSThe study group comprised 60 consecutive patients affected by COM, mucosal type. Preoperative assessment was done by thorough clinical examination, pure tone audiometry, X-ray of mastoids, etc. Tympanic membrane perforation, continuity of ossicular chain, condition of middle ear mucosa, condition of mastoid air cells and antrum, patency of aditus was evaluated during surgery. Tympanoplasty and mastoidectomy were performed accordingly. RESULTSOssicular chain erosions were found in 23 (38.33%) out of the 60 patients included in the overall sample. Ossicular chain erosion was found most frequently in subtotal perforation, n=19 (31.67%); in patients with bilateral disease, n=22 (36.67%) and granulation tissue in the middle ear, n=15 (25%). The incus was the ossicle most frequently affected by erosion, n= 20 (33.33%). CONCLUSIONOssicular chain erosions in patients with chronic otitis media, mucosal type are frequent and are present in 38.33% of the patients as per this study. Incus is the most common ossicle to get eroded (33.33%). Subtotal perforation, bilateral disease and granulation tissue in the middle ear can be considered as good indicators of ossicular chain involvement.