Imaging and Anatomy of the Cochlea; Genetics of Hearing Loss, Testing, and Relevance to Cochlear Implantation; Candidacy Evaluation, Medical and Surgical Considerations for Cochlear Implantation, Expanding Criteria in Children; Surgical Technique for Cochlear Implantation and Accepted Variations in Children; Bilateral Cochlear Implantation; Implanting Obstructed and Malformed Cochleae; Device Programming NRT, NRI, Streamlined Programming; Cochlear Implants and Music; Rehabilitation and Educational Considerations in Cochlear Implantation; Outcomes and Variables Affecting Outcomes in Cochlear Implantation; Language Development and Cochlear Implantation; New Frontiers in Cochlear Implantation: electroacoustic, hearing preservation; Revision Cochlear Implantation in Children; Current and Future Device Options for Cochlear Implantation