A Randomised Controlled Trial Comparing Bone Anchored Hearing Aid With Bonebridge

The Bonebridge is a new bone conducting implantable hearing aid. The investigators plan to randomize patients to receive either the Bonebridge or a conventional bone conducting hearing device. The investigators will then compare the surgical and audiological outcomes of the two groups.

The new Bonebridge fully implanted, except for an external sound processor. It does not have any percutaneous parts like the Bone Anchored Hearing Aid. The investigators believe that this may improve wound healing and reduce problems with wound infection and skin overgrowth seen in Bone Anchored Hearing Aids. There may also be audiological improvements by the use of the Bonebridge as the physical separation of the vibrating part from the sound processor should reduce feedback. The company also claims other audiological improvements in the Bonebridge. The investigators wish to demonstrate whether this is actually the case by performing a study directly comparing the outcomes of the two groups.

We will record and compare the standard speech audiometry results at a specific sound level in order to make a direct comparison of devices

The speech audiogram will also be carried out in noise to demonstrate whether one device gives an appreciable advantage over another with respect to understanding in noise compared to silence.

Patients will be asked to complete the Glasgow Benefit Inventory (GBI) and Hearing Device Satisfaction Scale (HDSS) questionnaires

The time (measured in days) will be recorded from the date of implantation to the date of its switch-on.

Inclusion Criteria: Conductive Hearing Loss within criteria for Bonebridge Adults Exclusion Criteria: Children Pregnancy