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Utility of 3D printed temporal bones in pre-surgical planning for complex BoneBridge cases

  • Otology
  • Published:
European Archives of Oto-Rhino-Laryngology Aims and scope Submit manuscript

Abstract

With the advent of single-sided hearing loss increasingly being treated with cochlear implantation, bone conduction implants are reserved for cases of conductive and mixed hearing loss with greater complexity. The BoneBridge (BB, MED-EL, Innsbruck, Austria) is an active fully implantable device with no attenuation of sound energy through soft tissue. However, the floating mass transducer (FMT) part of the device is very bulky, which limits insertion in complicated ears. In this study, 3D printed temporal bones of patients were used to study its utility in preoperative planning on complicated cases. Computed tomography (CT) scans of 16 ears were used to 3D print their temporal bones. Three otologists graded the use of routine preoperative planning provided by MED-EL and that of operating on the 3D printed bone of the patient. Data were collated to assess the advantage and disadvantage of the technology. There was a statistically significant benefit in using 3D printed temporal bones to plan surgery for difficult cases of BoneBridge surgery compared to the current standard. Surgeons preferred to have the printed bones in theatre to plan their drill sites and make the transition of the planning to the patient’s operation more precise. 3D printing is an innovative use of technology in the use of preoperative planning for complex ear surgery. Surgical planning can be done on the patient’s own anatomy which may help to decrease operating time, reduce cost, increase surgical precision and thus reduce complications.

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Acknowledgements

The authors wish to acknowledge the Garnett Passe and Rodney Williams Memorial Foundation and the Sydney Local Health District for research grants to fund this study. They also wish to acknowledge MEL-EL Innsbruck for their co-operation in providing the preoperative planning for each case and assistance during the 3D printed temporal bone drilling sessions in the laboratory. MED-EL did not contribute funding to the study and the authors declare no conflict of interest.

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Authors and Affiliations

  1. RPA Institute of Academic Surgery, The University of Sydney, Sydney, Australia

    Payal Mukherjee

  2. Vestibular Research Laboratory, School of Psychology, The University of Sydney, Sydney, Australia

    Kai Cheng

  3. St. Vincent’s Hospital, Sydney, Australia

    Sean Flanagan

  4. St. George Hospital, Sydney, Australia

    Simon Greenberg

  5. P O Box 1384, Wahroonga, 2076, Sydney, Australia

    Payal Mukherjee

Authors
  1. Payal Mukherjee
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  2. Kai Cheng
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  3. Sean Flanagan
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  4. Simon Greenberg
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Corresponding author

Correspondence to Payal Mukherjee.

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Conflict of interest

The authors declare no conflict of interest. The research was funded through independent research grants. None of the authors have received any honoraria or have any financial arrangements with each or any hardware or software providers included in the study or MED-EL.

Research involving human participants and/or animals

No research was conducted on human beings. This research was conducted on synthetic replicas of temporal bones and informed consent was attained. No identifying data were used in the study.

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Mukherjee, P., Cheng, K., Flanagan, S. et al. Utility of 3D printed temporal bones in pre-surgical planning for complex BoneBridge cases. Eur Arch Otorhinolaryngol 274, 3021–3028 (2017). https://doi.org/10.1007/s00405-017-4618-4

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  • DOI: https://doi.org/10.1007/s00405-017-4618-4

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