title: [Epidemiology of osteoporosis in Japan].
abstract: According to the aged society in Japan, the number of patients of osteoporosis increases dramatically and is estimated about five to eight million women suffering. Vertebral fracture can be seen about 25 - 45% of the women with age of 70 and over. The incidence and number of femoral neck fractures, which has a high mortality rate and is apt to result in the bedridden state, increase recently (the number estimated as about 100,000 per year) in particular among old-old population.
authors.affiliation: Department of Epidemiology, Tokyo Metropolitan Institute of Gerontology.
authors.forename: T
authors.initials: T
authors.lastname: Suzuki