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Study: Long-term audiological benefits with the BONEBRIDGE


New scientific studies summarized for you


Study: Long-term audiological benefit with the BONEBRIDGE

(Original title: Long-term audiological benefit with an active transcutaneous bone-conduction device: a retrospective cohort analysis, Eur Arch Otorhinolaryngol. 2021; Hunderpfund J et al.)


Take home message:

The BONEBRIDGE delivers good long-term audiological and speech benefits and is a safe and effective treatment for conductive and mixed hearing losses.


Studies on long-term benefits of active transcutaneous bone-conduction devices, such as the BONEBRIDGE, are rare. Most studies on these devices cover short-term periods and rather small patient cohorts.


  • 31 adult patients (mean age: 45.9±19.23 yrs) with unilateral conductive hearing loss or mixed hearing loss
  • Retrospective
  • Time of study: 7.1 years (2012-2019)
  • Main outcome measures: pure-tone audiometry and speech audiometry in quiet with German Freiburger monosyllable test at 65 dB SPL
  • Data collection:
    • Baseline: pre-implantation
    • follow-up 1: short-term (<12 months / 0.4±0.2 years, n = 26)
    • follow-up 2: long-term (> 12 months / 4.1±1.7 years, n = 21)



  • BC thresholds remained almost stable before and after implantation.
  • Mean BONEBRIDGE-aided AC PTA4 thresholds were significantly lower than in the pre-implant unaided condition, both for short-term and for long-term follow-ups.
  • Word recognition scores in quiet improved considerably in the aided condition for both short-term and long-term observation periods compared to the unaided condition.
  • Surgical considerations, particularly the usage of lifts for bone conduction surgery, did not make a difference.
  • Adverse events: 10 minor procedure-related and 5 implant-related events occurred during follow-up period, all of them manageable.


Read the abstract here: doi: 10.1007/s00405-021-07031-w

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