An evaluation of per-scalar cochlear electrode implantation techniques: an histopathological study in cats

Abstract

This study has been carried out primarily to evaluate the histopathological changes that occur in the cochlea and spiral ganglion of the cat following per-scalar cochlear electrode implantation techniques, prior to any surgical procedures on patients. A per-scalar implantation refers to one in which the electrode is threaded along the length of the scalae of the cochlea. This may be in an apical direction, where it is usually introduced through the round window, or in a basal direction where it is inserted through an opening drilled in the bone overlying the apical turn.