[Bone-anchored hearing aids. Preliminary results].
The bone conduction hearing aid is employed for patients who cannot tolerate treatment with air conduction hearing aids and for whom operation cannot offer permanent improvement of hearing. Conventional bone conduction hearing aids are, however, uncomfortable to wear, amplification is frequently less effective and sounds are often distorted. A new type of bone conduction hearing aid, the bone-anchored hearing aid (BAHA) is presented. In this, sound is transferred directly to the cranium via a percutaneous titanium implant. The results of treatment of the first six Danish patients are presented after a therapeutic period of 8-24 months. The subjective effect of treatment was satisfactory in all of the patients. They all employed their BAHA all day and found that the effect was better than the effect of air conduction hearing aids and conventional bone conduction hearing aids on practically all points. Speech discrimination investigations in quiet and noisy surroundings confirmed the subjective assessment although the differences between BAHA and the two other types of hearing aids were not as great as the patients subjective impressions. The bone-anchored hearing aid, BAHA, should, in our opinion, become the bone conduction hearing aid of the future for patients who have a permanent need for this. It represents considerable progress in treatment of a group of patients for whom treatment has hitherto been difficult and unsatisfactory.
Bonding
P
P
Københavns Amts Sygehus i Glostrup.
Jønsson
M H
MH
Salomon
G
G
D000368:Aged; D001844:Bone Conduction / Q000502:physiology; D003054:Cochlear Implants; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014025:Titanium
D014025:Titanium
Det knogleforankrede høreapparat (bone-anchored hearing aid). Praeliminaere resultater.