{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,1]],"date-time":"2025-11-01T22:32:51Z","timestamp":1762036371572,"version":"build-2065373602"},"reference-count":33,"publisher":"Cambridge University Press (CUP)","issue":"5","license":[{"start":{"date-parts":[[2021,4,22]],"date-time":"2021-04-22T00:00:00Z","timestamp":1619049600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Laryngol. Otol."],"published-print":{"date-parts":[[2021,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec id=\"S0022215121000293_sec_a1\"><jats:title>Objective<\/jats:title><jats:p>This study aimed to compare the necessary scutum defect for transmeatal visualisation of middle-ear landmarks between an endoscopic and microscopic approach.<\/jats:p><\/jats:sec><jats:sec id=\"S0022215121000293_sec_a2\" sec-type=\"methods\"><jats:title>Method<\/jats:title><jats:p>Human cadaveric heads were used. In group 1, middle-ear landmarks were visualised by endoscope (group 1 endoscopic approach) and subsequently by microscope (group 1 microscopic approach following endoscopy). In group 2, landmarks were visualised solely microscopically (group 2 microscopic approach). The amount of resected bone was evaluated via computed tomography scans.<\/jats:p><\/jats:sec><jats:sec id=\"S0022215121000293_sec_a3\" sec-type=\"results\"><jats:title>Results<\/jats:title><jats:p>In the group 1 endoscopic approach, a median of 6.84 mm<jats:sup>3<\/jats:sup> bone was resected. No statistically significant difference (Mann\u2013Whitney U test, <jats:italic>p<\/jats:italic> = 0.163, U = 49.000) was found between the group 1 microscopic approach following endoscopy (median 17.84 mm<jats:sup>3<\/jats:sup>) and the group 2 microscopic approach (median 20.08 mm<jats:sup>3<\/jats:sup>), so these were combined. The difference between the group 1 endoscopic approach and the group 1 microscopic approach following endoscopy plus group 2 microscopic approach (median 18.16 mm<jats:sup>3<\/jats:sup>) was statistically significant (Mann\u2013Whitney U test, <jats:italic>p<\/jats:italic> &lt; 0.001, U = 18.000).<\/jats:p><\/jats:sec><jats:sec id=\"S0022215121000293_sec_a4\" sec-type=\"conclusions\"><jats:title>Conclusion<\/jats:title><jats:p>This study showed that endoscopic transmeatal visualisation of middle-ear landmarks preserves more of the bony scutum than a microscopic transmeatal approach.<\/jats:p><\/jats:sec>","DOI":"10.1017\/s0022215121000293","type":"journal-article","created":{"date-parts":[[2021,4,22]],"date-time":"2021-04-22T05:58:26Z","timestamp":1619071106000},"page":"410-414","source":"Crossref","is-referenced-by-count":5,"title":["A volumetric three-dimensional evaluation of invasiveness of an endoscopic and microscopic approach for transmeatal visualisation of the middle 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