Perforation of eardrum and ossification of bone

In chronic suppurative otitis media, the middle ear is prone to sclerosis, even ossicular chain sclerosis. The ossicular chain consists of three ossicles, including the malleus, incus and stapes (the smallest bone in the human body). There is a articular surface between every two bones. The malleus is connected to the eardrum, and the stapes is connected to the oval window. When the eardrum vibrates under the action of sound waves, sound waves can reach the inner ear through the ossicular chain. When sclerosis occurs, that is, the articular surface between ossicles is in a state of hardening and fixation, which makes it unable to transmit sound. So hearing will decline. Actually, your mother suffers from chronic otitis media with tympanosclerosis. In this case, the effect of the operation may not be ideal.

Supplementary answer: ossicular chain reconstruction and tympanic membrane repair belong to tympanoplasty. In short, in the case of tympanosclerosis, the effect of surgery may not be ideal. If you don't have surgery, your hearing will be the same as it is now.