Incidence of clinical vertebral fractures and the rate for operation of the elderly in Kure City; large-scale claim database analysis

• Published in: Journal of Spine Research Vol. 11; no. 12; pp. 1374 - 1379
• Main Authors: Hamasaki, Takahiko, Okimoto, Nobukazu, Teramoto, Hidefumi, Nakagawa, Tsuyoshi, Shirakawa, Taizan, Mizuno, Naoyuki, Hayashi, Takahiro, Rikita, Takanori, Sasashige, Yoshiaki
• Format: Journal Article
• Language: Japanese
• Published: The Japanese Society for Spine Surgery and Related Research 20.12.2020
• Subjects: Claim database; Clinical vertebral fracture; incidence rate
• ISSN: 1884-7137; 2435-1563
• DOI: 10.34371/jspineres.2020-1202

Introduction: To examine the incidence of clinical vertebral fracture using the claim database, in those over 65 years of age in Kure, we used the medical care information of the National Health Insurance or Senior Elderly Care System in Kure City (Hiroshima Prefecture, Japan). And to elucidate the rate for operation among the clinical vertebral fractures.Methods: Those with vertebral fractures as disease name, and either treatment/ operation / hospitalization was defined as clinical vertebral fractures. Among the claim database, we extracted the clinical vertebral fracture, and investigated the number of occurrences, and the incidence rate per 100,000. From the Basic Resident Registration system, which is a national registry of Japanese citizens, we surveyed the population, gender according to the 5-year-old class over the age of 65. We also investigated the rate for operation among the clinical vertebral fractures.Result: The city population was 234,613 of whom 77,154 (32.9%) were age 65 years or older. The member who were aged 65 and over of the National Health Insurance or Senior Elderly Care System were 66,317 (26,739 male and 39,578 female) and the city population who were age 65 years or older was 77,154, thus the coverage rate accounted for 86.0% of the citizens. The incidence rate of clinical vertebral fractures of the elderly population (65 years or over) per 100,000 was 1,558 (729 male, 2,117 female, 2.90 female/male ratio). In both men and women, the incidence rate increased with aging. Among 1,033 clinical vertebral fractures, balloon kyphoplasty cases were 31 cases (3.0%), spinal fusion cases were 22 cases (2.1%), thus total of operation cases were 53 cases (5.1%).Conclusion: This is the first report that investigated the incidence rate of the clinical vertebral fractures and the rate for operation using the claim database, which covered almost the whole number of 230,000 population area.