Participant timeline
All patients will undergo a high-resolution CBCT within 48 h after surgery, to assess the R/S device and electrode array position. Patients will undergo two more CBCT scans at 3 and 12 months postoperatively. The R/S device position will also be assessed with a validated external measurement method after 1, 4, and 8 weeks, and at 3 and 12 months postoperatively by a researcher or by the patients’ audiologist or speech therapist [