The distance between the modiolus and the electrode array is one factor that has become the focus of many discussions and studies.

Positioning the electrode array closer to the spiral ganglion with the goal of reducing the current spread has been shown to improve hearing outcomes.

 The perimodiolar electrode arrays can be complemented with a surgical manoeuvre called the pull-back technique. This study focuses its attention on the recently developed 532 slim modiolar electrode.

investigate the intracochlear movements and pull-back technique for the 532 slim modiolar electrode. Material and Methods.

A decapping procedure of the cochlea was performed on 5 temporal bones. The electrode array was inserted, and the intracochlear movements were microscopically examined and digitally captured.

Three situations were analysed: the initial insertion, the overinsertion, and the pull-back position.

The position of the three white markers of the electrode array in relation to the round window (RW) was evaluated while performing these three actions.