Karkas A, et al. - Researchers here aimed to evaluate the benefit of preoperative surgical planning using computed tomography (CT) for atraumatic cochlear implantation. It was noted that difficulties to access RWM could be predicted on preoperative CT of temporal bones and control population, which correlated well with anatomical dissections and surgical findings during cochlear implantation. In most patients, electrode insertion through RWM was feasible according to CT planning, with or without drilling posterosuperior bony overhang of round window niche. When electrode apical diameter exceeded maximal RWM exposure, promontory cochleostomy could be recommended. No case of intracochlear trauma on microdissections was identified.