Extracochlear electrode extrusion

Abstract

Extracochlear electrode extrusion is a potentially under-recognized complication of cochlear implantation. As the age of implantation becomes younger, electrode extrusion is of concern due to future skull growth. Extrusion of several electrodes may compromise performance and thus require surgical reinsertion of the electrodes. Almost 60% of patients with electrode extrusion have required revision surgery.

This paper presents a case report and literature review which discusses factors which contribute to electrode extrusion and emphasizes the need for a high degree of suspicion in certain situations. Surgical steps such as electrode fixation techniques are highlighted in order to attempt to reduce the occurrence of this complication.

Keywords:

• Extracochlear
• Electrode
• Extrusion