Round Window Membrane Visibility and its Implications in Cochlear Implant Surgery.

With increasing number of patients with residual hearing being implanted, there is a renewed interest in round window (RW) as the preferred route for electrode insertion to reduce intracochlear trauma. The degree of round window membrane (RWM) visibility and its orientation might hamper the accessibility of RW for electrode insertion. This study is an attempt to identify the various factors affecting the accessibility of RW for electrode insertion.