{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T03:57:57Z","timestamp":1790654277110,"version":"4.1.0"},"reference-count":21,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2009,1,2]],"date-time":"2009-01-02T00:00:00Z","timestamp":1230854400000},"content-version":"vor","delay-in-days":32,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Laryngoscope"],"published-print":{"date-parts":[[2008,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:bold>Objective:<\/jats:bold> Middle\u2010turn cochleostomies are occasionally used for cochlear implant electrode placement in patients with labyrinthitis ossificans. This study evaluates the anatomic characteristics of the middle\u2010turn cochleostomy and its suitability for placement of implant electrodes.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> Ten cadaveric human temporal bones were dissected using a facial recess approach. A middle\u2010turn cochleostomy was drilled 2 mm anterior to the oval window and just inferior to the cochleariform process. The preparations were then stained with osmium tetroxide and microdissections were performed. The location of the cochleostomy on the cochlear spiral and its path through the various cochlear compartments were evaluated in all 10 specimens. A Cochlear Corporation depth gauge was inserted in five of the specimens and insertion trauma, number of contact rings, and depth of insertion were recorded.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> Eight of the 10 cochleostomies were placed at approximately 360\u00b0 on the cochlear spiral, near the transition between the basal and middle turns. In one case, the cochleostomy was found to enter the cochlear apex and in another it entered scala vestibuli of the proximal basal turn. The cochleostomy entered scala media in six bones and scala vestibuli in four specimens. A depth gauge was inserted in five specimens. The number of contacts placed within the cochlear lumen ranged from four to nine. There was evidence of insertional trauma to the lateral wall of the cochlear duct, basilar membrane, and Reissner's membrane, but no evidence of fractures to the osseous spiral lamina or modiolus.<\/jats:p><jats:p><jats:bold>Conclusion:<\/jats:bold> This study demonstrates that electrodes inserted via a middle\u2010turn cochleostomy are likely to enter scala vestibuli and have access to the middle\u2010 and apical\u2010cochlear turns. It is also possible that the electrode could be directed into the descending portion of the basal turn depending on cochleostomy orientation. Middle\u2010turn cochleostomy seems to be a viable alternative for electrode placement when preservation of residual hearing is not a concern.<\/jats:p>","DOI":"10.1097\/mlg.0b013e318182ee1c","type":"journal-article","created":{"date-parts":[[2008,11,19]],"date-time":"2008-11-19T08:10:55Z","timestamp":1227082255000},"page":"2200-2204","source":"Crossref","is-referenced-by-count":27,"title":["Anatomy of the Middle\u2010Turn Cochleostomy"],"prefix":"10.1002","volume":"118","author":[{"given":"Brandon","family":"Isaacson","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter S.","family":"Roland","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charles G.","family":"Wright","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2009,1,2]]},"reference":[{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.otohns.2005.03.036"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1097\/00005537-199712000-00005"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0194-59989670275-9"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1177\/019459988809800113"},{"key":"e_1_2_6_6_2","first-page":"S58","article-title":"Intact canal wall drill\u2010out procedure for implantation of the totally ossified cochlea","volume":"18","author":"Balkany T","year":"1997","journal-title":"Am J Otol"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2273.2004.00935.x"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1159\/000027755"},{"key":"e_1_2_6_9_2","first-page":"360","article-title":"Scala vestibuli cochlear implantation for labyrinthine ossification","volume":"11","author":"Steenerson RL","year":"1990","journal-title":"Am J Otol"},{"key":"e_1_2_6_10_2","first-page":"778","article-title":"Basal turn cochleostomy via the middle fossa route for cochlear implant insertion","volume":"19","author":"Colletti V","year":"1998","journal-title":"Am J Otol"},{"key":"e_1_2_6_11_2","first-page":"S42","article-title":"Electrodes for ossified cochleas","volume":"18","author":"Bredberg G","year":"1997","journal-title":"Am J Otol"},{"key":"e_1_2_6_12_2","first-page":"S39","article-title":"Nucleus double electrode array: a new approach for ossified cochleae","volume":"18","author":"Lenarz T","year":"1997","journal-title":"Am J Otol"},{"key":"e_1_2_6_13_2","doi-asserted-by":"publisher","DOI":"10.1002\/cii.11"},{"key":"e_1_2_6_14_2","first-page":"3","article-title":"Ganglion cell populations in labyrinthitis ossificans","volume":"12","author":"Hinojosa R","year":"1991","journal-title":"Am J Otol"},{"key":"e_1_2_6_15_2","doi-asserted-by":"publisher","DOI":"10.1177\/019459989110400306"},{"key":"e_1_2_6_16_2","doi-asserted-by":"publisher","DOI":"10.1288\/00005537-196711000-00003"},{"key":"e_1_2_6_17_2","doi-asserted-by":"publisher","DOI":"10.1097\/00005537-200404000-00015"},{"key":"e_1_2_6_18_2","first-page":"357","article-title":"Partial insertion of the nucleus multichannel cochlear implant: technique and results","volume":"14","author":"Cohen NL","year":"1993","journal-title":"Am J Otol"},{"key":"e_1_2_6_19_2","first-page":"53","article-title":"Successful revision of failed cochlear implants in severe labyrinthitis ossificans","volume":"17","author":"Telian SA","year":"1996","journal-title":"Am J Otol"},{"key":"e_1_2_6_20_2","doi-asserted-by":"publisher","DOI":"10.1097\/00129492-200101000-00006"},{"key":"e_1_2_6_21_2","doi-asserted-by":"publisher","DOI":"10.1177\/000348949110000904"},{"key":"e_1_2_6_22_2","doi-asserted-by":"publisher","DOI":"10.1097\/00003446-200202001-00011"}],"container-title":["The Laryngoscope"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1097%2FMLG.0b013e318182ee1c","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1097\/MLG.0b013e318182ee1c","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,11,14]],"date-time":"2023-11-14T11:59:12Z","timestamp":1699963152000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1097\/MLG.0b013e318182ee1c"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,12]]},"references-count":21,"journal-issue":{"issue":"12","published-print":{"date-parts":[[2008,12]]}},"alternative-id":["10.1097\/MLG.0b013e318182ee1c"],"URL":"https:\/\/doi.org\/10.1097\/mlg.0b013e318182ee1c","archive":["Portico"],"relation":{},"ISSN":["0023-852X","1531-4995"],"issn-type":[{"value":"0023-852X","type":"print"},{"value":"1531-4995","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,12]]}}}