Labyrinthitis ossificans poses a significant challenge to cochlear implant electrode insertion. Middle-turn cochleostomy with anterograde/retrograde manner or double-array electrode insertion is a viable option, in such cases. The purpose of this investigation was to evaluate the topography of the middle cochlear turn relative to the fenestra vestibuli (ovalis) or oval window (OW) and facial canal (FC) as pertaining...
✦ The floor
Discussion
Signed responses from readers of the wire.
Surgeons performing cochlear implantation in labyrinthitis ossificans cases should note the anatomical reference data for middle-turn cochleostomy, though prospective outcomes data are still needed before adopting this as a standard approach.
Detailed surgical anatomy data for middle-turn cochleostomy could improve implantation success rates in the challenging subset of patients with ossified cochleas.
- 01Study maps the spatial relationship of the middle cochlear turn to the oval window and facial canal.
- 02Findings are intended to guide middle-turn cochleostomy in labyrinthitis ossificans (hardening/scarring of the inner ear).
- 03Relevant to cochlear implant surgeons managing patients with severely compromised cochlear anatomy.
- 04Primarily a surgical anatomy/cadaveric or imaging-based study.
- 05Published in Surgical and Radiologic Anatomy (2026).
Topographic mapping of the middle cochlear turn relative to the oval window and facial canal can guide safer middle-turn cochleostomy in labyrinthitis ossificans.
studypartially supported- PMID
- 42806150
- DOI
- 10.1007/s00276-026-04020-8.
- Journal
- Surgical and Radiologic Anatomy
- Publication type
- research_article
- Evidence level
- 4
- Population
- Anatomical specimens or imaging datasets representing cochlear anatomy
- Intervention
- Topographic mapping of the middle cochlear turn
Primary outcomes
Spatial relationship of middle cochlear turn to oval window; Spatial relationship of middle cochlear turn to facial canal