The middle ear is located in the center of the temporal bone and bears a highly complex anatomy. The recently introduced exclusively endoscopic transcanal approach to the middle ear is a minimally invasive technique sparing the bone and mucosa of the mastoid bone, since the middle ear is accessed through the external auditory canal. This emerging method has several advantages over the traditional (microscopic) approaches to the middle ear such as the panoramic wide-angle views of the anatomy, the possibility to approach and magnify tiny structures, and the possibility of looking around the corner using angled endoscopes. The cadaveric dissection method presented here consists of an overview on the technical requirements and a precise description of a step-by-step protocol to discover the anatomy of the middle ear. Each step and anatomical structure is carefully described in order to provide a comprehensive guide to endoscopic ear anatomy. In our opinion, this is particularly important to any novice in endoscopic ear surgery as it provides thorough anatomical knowledge and may improve surgical skills.
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http://dx.doi.org/10.3791/56390 | DOI Listing |
Eur Arch Otorhinolaryngol
January 2025
Department of Otorhinolaryngology-Head and Neck Surgery, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
Objective: Intraoperative systems for monitoring facial nerve function, in which temporal electrical stimulation is applied to the facial nerve through electrodes, are used in many surgeries requiring facial nerve preservation; however, continuous stimulation or quantitative evaluation of facial nerve function is difficult with this approach. We examined the usefulness of a continuous and quantitative facial nerve-monitoring system for temporal bone lesions by using our experience to modify the existing methods used for cases involving vestibular schwannomas.
Study Design: Retrospective observational study.
Eur Arch Otorhinolaryngol
January 2025
Hatay Mustafa Kemal University Otorhinolaryngology Department, Hatay, Turkey.
Purpose: Tympanoplasty is a surgical procedure performed to cure middle ear infections and restore normal middle ear function. It is one of the most common procedures in otological surgery. Since Wullstein described tympanoplasty, the microscope has been a widely used surgical tool in otological surgery.
View Article and Find Full Text PDFInt J Mol Sci
January 2025
Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Inha University, Incheon 22332, Republic of Korea.
Gravitational changes have been shown to cause significant abnormalities in various body systems, including the cardiovascular, immune, vestibular, and musculoskeletal systems. While numerous studies have examined the response of the vestibular system to gravitational stimulation, research on functional changes in the peripheral inner ear remains limited. The inner ear comprises two closely related structures: the vestibule and cochlea.
View Article and Find Full Text PDFGenes (Basel)
January 2025
Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto 390-8621, Japan.
belongs to the unconventional myosin superfamily, and the myosin IIIa protein localizes on the tip of the stereocilia of vestibular and cochlear hair cells. Deficiencies in have been reported to cause the deformation of hair cells into abnormally long stereocilia with an increase in spacing. is a rare causative gene of autosomal recessive sensorineural hearing loss (DFNB30), with only 13 cases reported to date.
View Article and Find Full Text PDFGenes (Basel)
January 2025
Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto 390-8621, Japan.
Background/objectives: The gene is responsible for autosomal recessive non-syndromic sensorineural hearing loss and is assigned as DFNB18B. To date, 44 causative variants have been reported to cause non-syndromic hearing loss. However, the detailed clinical features for -associated hearing loss remain unclear.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!