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BackgroundFixation of receiver-stimulator (RS) in cochlear implantation is an important step of surgery, while the technique used is still debatable.Aim of studyThe aim of our study is to evaluate the applicability of our modified recess/tunnel (R/T) fixation technique.Materials and methodsDe novo cases between august 2018 and December 2020 were included. A bony recess was drilled deep to the full thickness of RS. A tunnel was fashioned for the fantail and electrode lead with a groove to slide it without trauma. No tie-down sutures were used. The length between the RS magnet and tragus was measured during follow-up visits.ResultsSeventy-eight patients received the new R/T; 37 (47.4%) were females. Children were 50 (64.1%) with an average age of 4.3 ± 2 years, while adults were 28 (35.9%) with an average age of 36.4 ± 10 years. Right implants were 69 implants while left ones were only 9. The average total operative time was 86 ± 13 min, while the average R/T preparation time was 11 ± 4 min which represents 12.8% of the total operative time. No RS migration, hard. or soft failures were detected. One case had postoperative haematoma originating from the skin, while other minor complications were not related to fixation and were treated medically.ConclusionThe R/T fixation technique provides good fixation to RS, fantail, and electrode lead protection and fixation. The disadvantages of wide exposure especially longer operative time can be avoided with this technique.

To assess the safety, time consumption and presumed postoperative complications of posterior repositioning in cases with bilateral anterior displaced sigmoid sinus (ADSS) having cochlear implant surgery. Cases with bilateral ADSS were included. A cortical bone chip was harvested. Sinus plate was drilled thin and removed, ADSS was repositioned posteriorly and secured by the bone chips. The procedure was completed using the standard posterior tympanotomy (PT) technique. Follow up was done both clinically and by computed tomography (CT). Out of 632 cases operated upon in more than 7 years, only 7 cases had Bilateral ADSS (1.1%) of which 5 were females (71.45%). The average age was 8.2 ± 12 (6 children and an adult). No intraoperative bleeding was encountered in any of the 7 cases. The average operative time was 103.6 ± 9.7 min. No minor nor major complications were detected in all 7 cases. To keep the advantages of PT, repositioning of ADSS in bilateral cases can be done safely with a reasonable increase in the average operative time.