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首页> 外文期刊>The Laryngoscope: A Medical Journal for Clinical and Research Contributions in Otolaryngology, Head and Neck Medicine and Surgery, Facial Plastic and Reconstructive Surgery .. >Scala Tympani Cochleostomy II: Topography and Histology.
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Scala Tympani Cochleostomy II: Topography and Histology.

机译：Scala Tympani耳蜗切开术II：地形和组织学。

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OBJECTIVE:: To assess intracochlear trauma using two different round window-related cochleostomy techniques in human temporal bones. METHODS:: Twenty-eight human temporal bones were included in this study. In 21 specimens, cochleostomies were initiated inferior to the round window (RW) annulus. In seven bones, cochleostomies were drilled anterior-inferior to the RW annulus. Limited cochlear implant electrode insertions were performed in 19 bones. In each specimen, promontory anatomy and cochleostomy drilling were photographically documented. Basal cochlear damage was assessed histologically and electrode insertion properties were documented in implanted bones. RESULTS:: All implanted specimens showed clear scala tympani electrode placements regardless of cochleostomy technique. All 21 inferior cochleostomies were atraumatic. Anterior-inferior cochleostomies resulted in various degrees of intracochlear trauma in all seven bones. CONCLUSION:: For atraumatic opening of the scala tympani using a cochleostomy approach, initiation of drilling should proceed from inferior to the round window annulus, with gradual progression toward the undersurface of the lumen. While cochleostomies initiated anterior-inferior to the round window annulus resulted in scala tympani opening, many of these bones displayed varying degrees of intracochlear trauma that may result in hearing loss. When intracochlear drilling is avoided, the anterior bony margin of the cochleostomy remains a significant intracochlear impediment to in-line electrode insertion.
机译：目的：使用两种不同的圆窗相关的人工耳蜗切开术对人类颞骨进行耳蜗内损伤评估。方法：本研究包括28个人类颞骨。在21个标本中，在圆窗（RW）瓣膜环下方开始进行耳蜗切开术。在七个骨头中，在RW环的前下方钻了耳蜗。在19根骨头中进行了有限的人工耳蜗植入电极插入。在每个标本中，以照相方式记录了海角解剖学和耳蜗造口术钻孔。通过组织学评估基础耳蜗损伤，并在植入的骨头中记录电极插入特性。结果：无论采用何种耳蜗造口术，所有植入标本均显示清晰的clear鼓鼓膜电极位置。所有21例下颌骨均无创伤。前下颌骨切开术在所有七个骨骼中导致不同程度的耳蜗内损伤。结论：对于使用耳蜗切开术无创性打开the鼓，应从下环至圆窗环开始钻探，并逐渐向管腔下表面发展。虽然耳蜗切开术开始于圆形窗环的前下方导致鼓室鼓膜张开，但这些骨头中的许多骨头显示出不同程度的耳蜗内损伤，可能导致听力丧失。当避免进行耳蜗内钻孔时，耳蜗切开术的前骨缘仍然是行内电极插入的重要耳蜗内障碍。

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