Histologic Evaluation of Temporal Bones with Cochlear Implants

Linthicum, Fred H.; Galey, Frank R.

doi:10.1177/000348948309200615

Cited by 40 publications

(17 citation statements)

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“…This ossification increases with the course of the disease, inducing a reduction of hair and spiral ganglion cells. However, the ossification does not appear to affect the auditory nerve fibers [Linthicum and Galey, 1983], which means that the performance of the CI is usually unaffected [Rotteveel et al, 2004].…”

Section: Findings In Subjects With Otosclerosismentioning

confidence: 99%

Cochlear Implant Users with Otosclerosis: Are Hearing and Quality of Life Outcomes Worse than in Cochlear Implant Users without Otosclerosis?

et al. 2018

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Background: The otosclerotic process may influence the performance of the cochlear implant (CI). Difficulty in inserting the electrode array due to potential ossification of the cochlea, facial nerve stimulation, and instability of the results are potential challenges for the CI team. Objectives: To evaluate hearing results and subjective outcomes of CI users with otosclerosis and to compare them with those of CI users without otosclerosis. Method: Retrospective review of 239 adults with bilateral profound postlingual deafness who underwent unilateral cochlear implantation between 1992 and 2017. Hearing and speech understanding were assessed via pure-tone audiometry and speech perception tests. Subjective outcomes were assessed via the Nijmegen Cochlear Implant Questionnaire (NCIQ), the Glasgow Benefit Inventory (GBI), and the Hearing Implant Sound Quality Index (HISQUI₁₉) at 6 months, 12 months, and at the last follow-up. Results: Subjects were 22 CI users with otosclerosis and 217 without otosclerosis. Both groups had a similar duration of deafness and age at CI implantation. Results did not significantly differ according to group: no significant intergroup difference was found regarding the frequency of complete electrode insertion, facial stimulation, reimplantation, or PTA4 scores at the last follow-up. Regarding speech perception, no significant intergroup difference was found on any test or at any interval. Further, subjective outcomes, as measured by the GBI, NCIQ, and HISQUI₁₉, did not significantly differ between groups. Conclusions: Adults with otosclerosis and profound hearing loss derive significant benefit from CI use. Audiological and self-reported outcomes are not significantly different from that of other CI users with postlingual deafness.

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Section: Findings In Subjects With Otosclerosismentioning

confidence: 99%

Cochlear Implant Users with Otosclerosis: Are Hearing and Quality of Life Outcomes Worse than in Cochlear Implant Users without Otosclerosis?

et al. 2018

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“…The histopathological analyses of cadavaric temporal bones from users of multichannel cochlear implants during life include studies that examine the degree to which variation in the peripheral anatomy accounts for variance in psychophysical and speech-reception measures (Clark et al, 1988;Fayad et al, 1991;Johnsson et al, 1979Johnsson et al, , 1982Kawano et al, 1998;Linthicum et al, 1991;Linthicum and Galey, 1983;Marsh et al, 1992;Nadol et al, 2001;O'Leary et al, 1991;Terr et al, 1989;Zappia et al, 1991). Clark et al (1988) reported the temporal-bone histopathology and psychophysical/ speech-reception performance of one Nucleus implantee.…”

Section: Introductionmentioning

confidence: 99%

Histopathology of human cochlear implants: Correlation of psychophysical and anatomical measures

et al. 2005

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“…Histologic evaluation of the cochlea after the insertion of a cochlear implant electrode in human cadaver temporal bones has demonstrated immediate damage to the spiral ligament, organ of Corti, osseous spiral lamina, and other fine structures of the inner ear (1)(2)(3). In our previous cryohistologic study of human temporal bones, we analyzed the electrode position and structural damage to the cochlea and suggested a scale of 0 to 4 to describe a gradation of the extent and severity of immediate macroscopic trauma (3).…”

mentioning

confidence: 99%