Speech Discrimination Outcomes in Patients Implanted With Perimodiolar Versus Lateral Wall Cochlear Implant Arrays: Systematic Review and Meta-Analysis

Analysis of combined CNC scores revealed a statistically significant improvement in post-CNC results following implantation with a PM array at ∼1 year, but this difference was slight and not clinically significant. There was no difference in post-operative AzBio scores between patients implanted with a PM array compared with those implanted with a LW array. There may be an age-related benefit to the perimodiolar electrode with regard to AzBio word understanding, as studies suggest improved AzBio scores with PM arrays included older patients. No such relationship was seen for CNC scores.