Incomplete partition type III: A rare and difficult cochlear implant surgical indication

Incomplete partition type-III is one of the rarest inner ear anomaly and the rarest among incomplete partition group. Treatment options may differ depending on the hearing loss level of the patient. Stapes surgery should be avoided because it will lead to gusher and further hearing loss. Preoperative imaging is mandatory in order to avoid unnecessary stapes surgery. Incochlear implantation surgery a gusher and misplacement into the IAC may complicate the surgery. Gusher should be controlled intraoperatively and the position of the electrode should be controlled via intraoperative imaging.