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Ossicular Chain Dislocation

What is Ossicular Chain Dislocation

  • The dislocation of the middle ear bones
  • Leads to hearing loss because sound cannot be transmitted correctly

The Part of the ear that is affected:

  • The inner ear(cochlea) is affected
  • Sounds reach the ear drum but are incompletely transferred by the ossicular chain in the middle ear and fail to reach the inner ear

Causes of This Hearing Loss

  • A fracture of the temporal bone
  • Chronic ear infections
  • Cholesteatoma, which is a benign tumor caused by the build up of skin cells in the ear
  • Congenital ear malformation, which is when the ossicular bones are not formed properly
  • Hereditary

affects on hearing

  • Sounds cannot be transmitted properly
  • Disrupts the passage of sound waves through the middle ear
  • Causes conductive hearing loss

TREATMENT

  • Hearing can be restored by the surgical ear procedure called "Ossicular Chain Reconstruction"
  • The procedure reestablishes the connection between the eardrum and the inner ear
  • Reconstructs hearing bones
  • Goes through the ear canal and reconstructs using bone cement
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