Applied anatomy of round window and adjacent structures of tympanum related to cochlear implantation

Brazilian Journal of Otorhinolaryngology
Shraddha JainAshish Disawal

Abstract

Various aspects of the round window anatomy and anatomy of posterior tympanum have relevant implications for designing cochlear implant electrodes and visualizing the round window through facial recess. Preoperative information about possible anatomical variations of the round window and its relationships to the adjacent neurovascular structures can help reduce complications in cochlear implant surgery. The present study was undertaken to assess the common variations in round window anatomy and the relationships to structures of the tympanum that may be relevant for cochlear implant surgery. Thirty-five normal wet human cadaveric temporal bones were studied by dissection for anatomy of round window and its relation to facial nerve, carotid canal, jugular fossa and other structures of posterior tympanum. The dissected bones were photographed by a digital camera of 18 megapixels, which were then imported to a computer to determine various parameters using ScopyDoc 8.0.0.22 version software, after proper calibration and at 1× magnification. When the round window niche is placed posteriorly and inferiorly, the distance between round window and vertical facial nerve decreases, whereas that with horizontal facial nerve increases. In ...Continue Reading

Citations

May 23, 2020·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·Rasim YilmazerBasar Sarikaya
Apr 1, 2020·Acta Oto-laryngologica·Marek PolakHenryk Skarzyński
Jan 14, 2021·Surgical and Radiologic Anatomy : SRA·Orhan BegerDerya Ümit Talas
Nov 17, 2021·Vestnik otorinolaringologii·I V KostevichS B Sugarova

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