A comparative study of audiologic outcomes for two transcutaneous bone-anchored hearing devices

Harry R F Powell*, Alison M. Rolfe, Catherine S. Birman

*Corresponding author for this work

Research output: Contribution to journalArticle

20 Citations (Scopus)


Objective: In 1977, Tjellstrom et al. used the concept of osseointegration and implanted patients with a titanium screw as part of the first bone-anchored hearing solution. Despite good hearing outcomes with the percutaneous device, there has been a drive for the development of transcutaneous bone conduction systems because of soft tissue complications, aesthetics, and loss or failure of the abutment. This study compares audiologic and quality of life questionnaire outcomes (author-designed questionnaire) for two transcutaneous bone conduction implants. Study Design: Cross-sectional cohort study. Setting: Tertiary referral hospital and national audiology service. Patients: Twelve patients, 10 children and two adults. Six recipients of each device. Main Outcome Measures: Pure-tone audiometry, aided thresholds, speech discrimination scores, and quality of life questionnaire results. Results: The unaided four-frequency average air conduction for affected ears was 60.8 dB HL for the Attract group and 57.8 dBHL for the Sophono group; these improved to mean aided thresholds of 30.6 dB HL and 29.8 dB HL, respectively. There was no statistical difference between the speech discrimination scores for the two devices in quiet at 55 dB SPL (p=0.33) orin noise (p=0.87). Conclusion: Both systems provide audiologic benefit compared with the unaided situation. Comparing small numbers of patients, there was no significant difference in aided thresholds or speech discrimination scores between these two transcutaneous bone-anchored implants. All Attract and Sophono users reported improvement in quality of life and would recommend their device to others in a similar situation.

Original languageEnglish
Pages (from-to)1525-1531
Number of pages7
JournalOtology and Neurotology
Issue number9
Publication statusPublished - Oct 2015



  • Anchored hearing implant
  • Baha attract
  • Bone
  • Bone conduction
  • Clinicaloutcome
  • Hearing loss
  • Sophono
  • Transcutaneous

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