Abstract
Otosclerosis is a disease commonly found in white people but very rarely found in Japanese. Nevertheless, we have found and operated on 32 cases of otosclerosis during a 3-year period. This incidencle of otosclerosis in our clinic is extremely frequent compared with those reported by other university clinics. In order to clarify the actual prevalence of the disease in Miyazaki, sociomedical studies were carried out and the followings were listed.
1. Clinical features such as age-, sex-distributions, laterality, tinnitus e.t.c. were the same with those in white people.
2. The hereditary characters could not be found in any cases.
3. The reasons of our high prevalence of otosclerosis were discussed, but no conclusions were gainedfrom the results to date.
4. To clarify the actual prevalence of otosclerosis in Miyazaki ; further in Japan, the enlightment of this disease and also the promotion of the surgical technique are seemed to be necessary.
5. We feel certain that the clinical studies of otosclerosis in Japan should be rather valuable to resolve the genesis of otosclerosis because of its rare incidence in Japan.
