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Related Experiment Video

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Image-guided protocol with a guide-marker for bone conduction hearing implant placement estimation.

Renata Tadeu Ramirez Garcia1, Antonio Carlos Dos Santos2, Fabiana Danieli-Hyppolito3

  • 1Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo, Department of Ophthalmology, Otorhinolaryngology, Head and Neck Surgery, Ribeirão Preto, SP, Brazil.

Brazilian Journal of Otorhinolaryngology
|January 8, 2026
PubMed
Summary

This study presents a reliable image-guided protocol using 3D CT scans and a marker for precise Bone Conduction Hearing Device (BCHD) implant placement. The method aids surgeons in optimizing BCHD surgery outcomes.

Keywords:
Bone conductionBone thicknessBone-anchored hearing aidComputed tomographyImaging

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Area of Science:

  • Medical Imaging
  • Surgical Planning
  • Otolaryngology

Background:

  • Percutaneous Bone Conduction Hearing Devices (BCHD) require precise implant placement for optimal function.
  • Preoperative imaging and surgical planning are crucial for successful BCHD implantation.

Purpose of the Study:

  • To introduce and validate an image-guided protocol for estimating optimal percutaneous BCHD implant placement.
  • The protocol combines 3D reconstruction of Computed Tomography (CT) images with a guide-marker system.

Main Methods:

  • The study included 51 subjects (ages 6-75) undergoing percutaneous BCHD surgery.
  • Implant points were estimated and marked using a guide-marker, then compared with preoperative CT scans.
  • Two independent reviewers assessed the protocol's replicability.

Main Results:

  • 54 BCHD surgeries were performed. Anatomical variations impacting placement were identified in 52.9% of subjects.
  • The protocol demonstrated moderate inter-reviewer agreement for implant placement accuracy.
  • The method proved effective in identifying potential placement challenges.

Conclusions:

  • The developed image-guided protocol is reliable and effective for estimating optimal BCHD implant placement.
  • This technique serves as a valuable tool for enhancing percutaneous BCHD surgical practice.
  • Improved surgical planning can lead to better patient outcomes.