A major challenge for otologists treating middle ear infection is to obtain
a dry ear and optimal hearing. If the patient needs amplification and uses
an air conduction hearing aid, the ear mold, occluding the ear canal, may
provoke or aggravate the infection in the middle ear and thus cause otorrho
ea. Continuous otorrhoea may cause cochlear damage in the long run. Bone co
nduction hearing aids offer an alternative for such patients.