References
Audiological Aspects
Audiological improvement / hearing outcomes
1. "All outcomes reported and summarized here reflect beneficial audiological performance and high patient satisfaction, accompanied with a low complications rate." (Magele et al. 2019)
2. "All outcomes were better in [Bonebridge) condition than [bone conduction hearing aids]." (Yang et al. 2020)
3. "So, when comparing pre-surgical results of BahaV R5 Power with softband to postoperative surgical procedures with the OsiaTM system at 2months after activation, the average functional gain for all frequencies was statistically higher (p<.05) for OsiaTM System (36.88dB) than for Baha 5 Power (30,57dB)" (Goycoolea et al. 2020)
4. "Statistically significant improvements in audibility, speech-understanding, speech-recognition and quality-of-sound in noise and quiet were found for the OsiaTM compared to preoperative unaided hearing and aided hearing with the Baha 5 PowerV R Sound Processor on a softband." (Goycoolea et al. 2020)
5. "Speech perception as measured by WRS and SRT50% improved on average approximately 67.6% and 27.5 dB, respectively, 3 months after implantation." (Baumgartner et al. 2016)
More: Skarzynski et al. 2019, Zernotti et al. 2016, 2019, Fan et al. 2017, 2019, Der et al. 2018, Ihler et al. 2016, Gerdes et al. 2016, Sprinzl et al. 2013, Lasaletta et al. 2016, Rader et al. 2018
Audiological Aspects
Better high frequency hearing (compared to passive transcut.)
1. "The active vibration system provided improvement at low and high frequencies. (...) In the case of the passive device BAHA
Attract, the performance drops gradually above 3000Hz because of the soft tissue attenuation of the externally generated vibration (.)" (Goycoolea et al. 2020)
2. A comparative study of active and passive devices by Zernotti et al. also showed that active devices had a better performance than passive devices at medium and high frequencies. (conclusion / Zernotti et al. 2015)
Medical Aspects
Best option for malformations
1. "Simultaneous BB implantation during either total auricular reconstruction or framework projection for microtia patients who have aural atresia/stenosis is feasible and safe." (Chan et al. 2019)
2. "In our experience, bone conduction thresholds in children with a malformation (e.g., atresia) are normal and remain stable after the implantation of a [bone conduction implant]. "(Schilde et al. 2017)
3. Baumgartner et al. (2016) showed, that active transcutaneous devices as the Bonebridge are "an alternative option for congenital malformations of the external and middle ear based on its noticeable audiological efectiveness, especially for patients with bilateral conductive hearing loss. " (conclusion / Baumgartner et al. 2016)
Medical Aspects
Local anaesthesia
1. "Implantation of the Bonebridge with local or general anesthesia is a safe and feasible procedure, with audiometric results that can come close with the ones provided by [bone anchored hearing device] users. " (Manrique et al. 2014)
Medical Aspects
Simple surgery
1. "All patients whose implantable part of the device was fixed to the skull bone and additionally compressed underlying dura andlor sinus for several millimeters (range 2 - 5 mm) had good hearing outcomes." (Vyskocil et al. 2016)
2. "Using an image-guided surgical navigation system to aid in the placement of the BC-FMT on the simulated location is a simple procedure and is more effective that finding the exact coordinates. It also shortens the decision time for applying the implant."
Medical Aspects
MRI conditional
1. "MRI of the brain can be performed in patients with active transcutaneous bone conduction implants (BB) at 1.5 T without sacrificing diagnostic imaging quality, provided that special MRI artifact reduction sequences, like the SEMAC-VAT metal artifact reduction sequences optimized in Bern, are acquired." (Wimmer et al. 2019)
2. Other active transcutaneous Bone Conduction implants require surgical magnet removal before undergoing MRI at 1.5 or 3
Tes/a. (HEARRING consensus)
3. ""The middle fossa approach allows a better visualization of IAC canal in the ipsilateral ear with both implant versions, but the effect is more prominent with the BCI602." (Utrilla et al. 2020)
4. "This pilot study indicates that the present BCI [bone conduction implant] may withstand 1.5 Tesla MRI with only minor effects on its performance." (Jansson et al. 2015)
More: Azadarmaki et al. 2014, Tisch 2017
Medical Aspects
Intact skin
1. "Advantages especially in children include the lack of a skin-penetrating abutment, which substantially removes the need for medical follow-up, the external device is compact, simple to use and is considerably better cosmetically." (Kulasegarah et al. 2018)
2. "The main advantage of transcutaneous devices, both active and passive, is that they keep the skin intact. " (Lasaletta et al. 2016)
Patient-reported Aspects
All day wearing comfort (due to no skin pressure)
1. Baumgartner et al. (2016) determined a mean of 11.2 hours wearing time per day (conclusion / Baumgartner et al. 2016)
2. Zernotti et al. (2016) concluded that BONEBRIDGE users (8-12 h/d) showed a significantly longer wearing time of the device compared to SOPHONO Alpha recipients (7-10 h/d) (conclusion / Zernotti et al. 2016)
3. "All patients use their devices all day during their daily activities. " (Goycoolea et al. 2020)
4. "Since the external processor does not include a vibrator, the weight is quite low, which reduces the risk of the external device falling off, while increasing wearing comfort since less magnetic force is required for retention." (Westerkull 2018)
More: Lasaletta et al. 2016
Patient-reported Aspects
Subjective benefit
1. Improvement of subjective benefit in several different kind of questionnaires significantly shown (conclusion / Magele et al. 2019)
2. "The SSQ-12 was completed at all intervals (pre, post-2 and post-months). Statistically significant improvements (p<.05) were observed in the SSQ-12 Speech and Qualities scales when comparing pre to months and pre to months conditions, which may indicate that the reported benefit can be even greater after one year of use." (Goycoolea et al. 2020)
More: Sprinzl et al. 2013, Baumgartner et al. 2016, Skarzynski et al. 2019