{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T20:29:25Z","timestamp":1791232165564,"version":"4.1.0"},"reference-count":30,"publisher":"Wiley","license":[{"start":{"date-parts":[[2015,1,1]],"date-time":"2015-01-01T00:00:00Z","timestamp":1420070400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"funder":[{"name":"S\u00e3o Paulo State Foundation for Research Support"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BioMed Research International"],"published-print":{"date-parts":[[2015]]},"abstract":"<jats:p><jats:italic>Hypothesis<\/jats:italic>. This study aimed to evaluate whether there is a difference in the degree of intracochlear trauma when the cochlear implant electrode arrays is inserted through different quadrants of the round window membrane.<jats:italic>Background<\/jats:italic>. The benefits of residual hearing preservation in cochlear implant recipients have promoted the development of atraumatic surgeries. Minimal trauma during electrode insertion is crucial for residual hearing preservation.<jats:italic>Methods<\/jats:italic>. In total, 25 fresh human temporal bones were subjected to mastoidectomy and posterior tympanotomy. The cochlear implant electrode array was inserted through the anterosuperior quadrant of the round window membrane in 50% of the bones and through the anteroinferior quadrant in the remaining 50%. The temporal bones were dehydrated, embedded in epoxy, serially polished, stained, viewed through a stereomicroscope, and photographed with the electrode arrays<jats:italic>in situ<\/jats:italic>. The resulting images were analyzed for signs of intracochlear trauma.<jats:italic>Results<\/jats:italic>. Histological examinations revealed varying degrees of damage to the intracochlear structures, although the incidence and severity of intracochlear trauma were not influenced by the quadrant of insertion.<jats:italic>Conclusions<\/jats:italic>. The incidence and severity of intracochlear trauma were similar in all samples, irrespective of electrode array insertion through the anterosuperior or anteroinferior quadrant of the round window membrane.<\/jats:p>","DOI":"10.1155\/2015\/236364","type":"journal-article","created":{"date-parts":[[2015,7,5]],"date-time":"2015-07-05T21:01:12Z","timestamp":1436130072000},"page":"1-9","source":"Crossref","is-referenced-by-count":18,"title":["Evaluation of Intracochlear Trauma Caused by Insertion of Cochlear Implant Electrode Arrays through Different Quadrants of the Round Window"],"prefix":"10.1155","volume":"2015","author":[{"given":"Graziela de Souza Queiroz","family":"Martins","sequence":"first","affiliation":[{"name":"Department of Medicine, Faculdade de Medicina, University of Sao Paulo, Avenida Dr. Ene\u00e1s de Carvalho Aguiar 255, Sala 6167, 05403-000 S\u00e3o Paulo, SP, Brazil"},{"name":"Department of Otorhinolaryngology, Clinical Hospital, FMUSP, Avenida Dr. Ene\u00e1s de 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