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Cochlear otosclerosis: Fact or fantasy

Histological examination of 910 temporal bones from 582 individuals reveals 92 specimens with clinical otosclerosis (stapes fixation) and 32 with histological otosclerosis (without stapes fixation). The incidence of histological otosclerosis in ears from white individuals over the age of five (734 ears) was 4.4 percent. The otosclerotic focus involved the endosteum of the cochlear wall (cochlear otosclerosis) in three of the latter group for an incidence of 0.3 percent.