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Received October 28, 2019 Revised January 3, 2020 Accepted February 3, 2020 Address for correspondence Shi Nae Park, MD, PhD Department of OtolaryngologyHead and Neck Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul 06591, Korea Tel +82-2-2258-6215 Fax +82-2-595-1354 E-mail snparkmd@catholic.ac.kr Subtotal petrosectomy (STP) is an effective treatment modality for recurrent suppurative otitis media (CSOM) and cochlear implant (CI) may be combined for auditory rehabilitation. An active transcutaneous bone conduction implantation system, known as Bonebridge (BB) (MED-EL), is indicated for conductive or mixed hearing loss as well as for single-side deafness, but no cases of BB implantation during STP have been reported. A 37-year-old woman who had previously undergone radical mastoidectomy visited our clinic. The left side was deaf and the CT scan showed total ossification of the cochlea, indicating that CI was not possible. STP was performed and bone conduction-floating mass transducer was placed at a sinodural angle. A month later, the sound processor was applied successfully without any complications. This case suggests that BB implantation during STP may be another effective therapeutic option for CSOM patients who have difficulty undergoing CI procedure. Korean J Otorhinolaryngol-Head Neck Surg 2020;63(8):386-90

A Case of Simultaneous Active Transcutaneous Bone Conduction Implantation (Bonebridge<sup>TM</sup>) Performed with Subtotal Petrosectomy