Image-guided placement of the Bonebridge\(^\mathrm{TM}\) without surgical navigation equipment

  • Byunghyun Cho
  • Nozomu MatsumotoEmail author
  • Megumu Mori
  • Shizuo Komune
  • Makoto Hashizume
Original Article



   Most of the current Bonebridge surgeries undergo preoperative simulation planning in a computer. However, surgeons usually use the landmarks on the bone surface to determine the location where to implant the device, using the simulation image in the computer only as a reference (conventional method). We developed an image-guided method for precisely replicating simulation surgery upon performing Bonebridge implantation.


   Based on our previous development of the surface template-assisted marker positioning (STAMP) method for performing image-guided otologic surgery, we fabricated templates that fit only at the designated location on the patient’s temporal bone surface. The Bonebridge STAMP (BB-STAMP) plate shows the exact location where to start drilling. The BB-STAMP was also combined with a perforator-guiding sleeve, so that the location, direction and depth of the cylindrical well could be precisely replicated as simulated. We also created a STAMP plate for confirmation that fits only after sufficient drilling at the correct location is finished. To evaluate the proposed methods, we performed simulation surgery on four cadaveric temporal bones and their 12 replicas (three each for four bones). The time used and the degree of mismatch between the simulated location and the drilled location were compared.


   A feasibility study was successfully conducted using the proposed BB-STAMP methods and the conventional method. The amount of time required for the procedure did not differ significantly between the surgical methods, although using the BB-STAMP and perforator guide was always quicker. The degree of mismatch between the simulation and resected models had tendency to be smaller when the surgery was guided by the BB-STAMP with or without a perforator guide, although the difference was not statistically significant.


   The proposed BB-STAMP is a promising method for replicating exactly what is performed during simulation without using a surgical navigation system.


STAMP Bonebridge Image-guided surgery Template Surgical navigation 



The authors thank Mr. H. Ono and Mr. H. Sugiyama (Ono and Co.) for their technical assistance in producing the BB-STAMP and C-STAMP plates. The authors also thank Mr. G. Ball, Mr. P. Grasso, Mr. M. Nagl (Med-EL Austria) and Ms. Y. Kawabata (Med-EL Japan) for providing us with precise information and surgical instructions for the Bonebridge product, which is not approved for clinical use in Japan. Mr. P. Grasso has also helped us with critical reading of the manuscript. This study was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant No. 24500549 to N.M.

Conflict of interest

B.C., M.M., S.K., and M.H.: None. N.M. is an applicant of patents related to the STAMP method; thus, he declared this fact as a potential conflict of interest.


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Copyright information

© CARS 2014

Authors and Affiliations

  • Byunghyun Cho
    • 1
  • Nozomu Matsumoto
    • 2
    Email author
  • Megumu Mori
    • 1
    • 3
  • Shizuo Komune
    • 2
  • Makoto Hashizume
    • 1
  1. 1.Department of Advanced Medical Initiatives, Faculty of Medical SciencesKyushu UniversityHigashi-ku, Fukuoka Japan
  2. 2.Department of Otorhinolaryngology, Graduate School of Medical SciencesKyushu UniversityHigashi-ku, Fukuoka Japan
  3. 3.Department of Neurosurgery, Graduate School of Medical SciencesKyushu UniversityHigashi-ku, FukuokaJapan

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