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Bone Anchored Hearing Aid Assessment, Fitting and Care

Image of Bone Anchored Hearing Aid
Bone Anchored Hearing Aid

The Bone-anchored hearing aid system (BAHA) is a hearing aid which uses the principle of bone conduction. In normal hearing, sound may be transmitted to the inner ear both by air (through the outer and middle ear) or through the bones of the skull. In individuals who are unable to hear using air conduction, either due to a congenital malformation of the ear canal, or due to chronic ear infection, a hearing aid which utilises bone conduction is the most appropriate. A BAHA may also be suitable for those with single sided deafness (affecting one ear only).

The BAHA comprises a vibration transducer which is coupled to a titanium implant, anchored to the temporal bone of the skull. Surgery is required for the placement of the titanium fixture. The BAHA system offers advantages over conventional bone conduction hearing aids. Conventional bone conduction aids require a transducer, placed on the opposite side of the head, to be held in place by a tight steel band and may cause problems with pressure effects (especially in children), an unnatural listening circumstance and loss of sound quality.1,2.

For more information regarding suitability for BAHA and how to be assessed please speak to your hearing specialist.

 

 

References

  1. Proops D. Bone anchored hearing aids. British Association of Otorhinolaryngologists head & Neck Surgeons. Statements of clinical effectiveness. August 1998.

  2. Bone anchored hearing aid. Health Technology Scientific Literature Review. Ontario. 2002.

 

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