Ankylosing of the stapes is called

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Otosclerosis, an abnormal bone growth in the middle ear, primarily affects the stapes, the third bone or ossicle of the middle ear, as the individual ages. Movement of the ossicles is impaired, which causes diminished conduction of sound waves and resulting hearing loss (see Figure 5-30). With this condition, an abnormal growth of spongy bone forms around the oval window, causing ankylosis of the stapes. Ankylosis produces conductive deafness because the ossicles cannot conduct the sound vibrations as they enter the ear. Symptoms of otosclerosis are tinnitus and a gradual hearing loss of low or soft sounds, which may be unilateral at first, but usually affects both ears at some point. Patients usually report not being able to hear as well with the affected ear when talking on the telephone. Relatives may notice that patients turn their heads to hear well. Otosclerosis is a young person's disease, with onset usually beginning after puberty and before 35 years of age.

Ankylosing of the Stapes Is Called