Otosclerosis

Also called Otospongiosis

Otosclerosis is when abnormal bone grows in the middle ear and stops one of the tiny bones (the stapes) from moving properly. This stops sound passing into the inner ear and causes hearing loss that slowly gets worse. It often runs in families, usually starts between ages 20 and 40 and is more common in women.

Last updated Nov 9, 2026

What it is

It may affect one or both ears. It does not usually cause complete deafness.

Hearing aids work well for many people. An operation called a stapedectomy or stapedotomy can improve hearing for some.

Common signs

  • Hearing loss that slowly gets worse
  • Finding it easier to hear in noisy places
  • Ringing or buzzing in the ears (tinnitus)
  • Hearing your own voice loudly
  • Sometimes dizziness

How it is usually diagnosed

  • Ear examination
  • Hearing tests (audiogram and tympanometry)
  • Sometimes a CT scan

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Audiogram results
  • ENT letters
  • Scan reports
  • Surgery notes
  • Hearing aid fitting records

Questions to ask your doctor

  • Would a hearing aid or surgery suit me better?
  • What are the risks of surgery?
  • How often should my hearing be checked?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Sudden hearing loss in one or both ears: see a doctor the same day

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

Sources