Objectives
tinnitus, headache, vertigo
MINOR, COMPLICATION, TINNITUS, SECONDARY, COMPLICATIONS
The primary objective of our study is to compare the migration rates of the two fixation techniques (bony recess vs. subperiosteal tight pocket) by analyzing 3D reconstructions of the R/S device, acquired by cone-beam computed tomography (CBCT) scans at baseline and at 3 and 12 months post-surgery. Secondary objectives are to investigate the difference between the two fixation techniques in patient-experienced burden using the validated COMPASS questionnaire, electrode array migration rate, and electrode impedance values. Other secondary objectives are to investigate the association of electrode impedance values with R/S device and electrode migration, and whether complaints of performance drop, vertigo, tinnitus, headache, or nonauditory stimulation are associated with electrode array migration and R/S device migration. We will also compare the complication rate of these surgical techniques, for major and minor complications. Finally, we will validate the measurement method technique with flexible tape measure for the assessment of migration of the R/S device [