Naoki Okubo1, Motoyuki Horii2,3,4, Kazuya Ikoma2, Maki Asada2,4, Tsuyoshi Goto2, Nagato Kuriyama5,6, Kenji Takahashi2. 1. Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan. nokubo@koto.kpu-m.ac.jp. 2. Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan. 3. Department of Rehabilitation Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan. 4. Rakuwakai Otowa Rehabilitation Hospital, Kyoto, Japan. 5. Department of Epidemiology for Community Health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan. 6. Shizuoka Graduate University of Public Health, Shizuoka, Japan.
Abstract
Secular changes in the incidence rate of hip fractures were estimated to vary by fracture type, i.e., femoral neck or trochanteric fractures, age, and sex, in urban or rural areas in Kyoto Prefecture, Japan from 2008 to 2017. PURPOSE: Our survey in Kyoto Prefecture from 2008 to 2017 showed that the incidence rate of femoral neck fractures is generally increasing. We investigated the differences between urban and rural areas in the changes of the incidence rate over time of femoral neck and trochanteric fractures during the same period. METHODS: Patients aged 65 years and above who sustained hip fractures between 2008 and 2017 and were treated at one of the participating 11 hospitals were included. The ratio of sick beds for acute-term care at the investigated hospitals to total number of beds in the urban area was 16.5% (1863/11,158) and 30.6% (1863/5623) in the rural area. The change in incidence rate was estimated utilizing the population according to the national census conducted in 2010 and 2015. RESULTS: There were 3559 and 6474 hip fractures in the urban and rural areas, respectively. Femoral neck fractures were 1936 (54.4%) and 2813 (43.5%) in each area. The increase of the population-adjusted numbers was marked by neck fractures in males, in both areas. In women, there was a significant increase in femoral neck fractures in the urban area in those aged 85 years and over. For trochanteric fractures, a significant increase was only found in women aged 65 to 74 years in the rural area. CONCLUSION: A regional difference in the secular changes in incidence rate of hip fractures was found in women, not in men, mostly because neck fractures in women increased in the over 85 group in the urban area.
Secular changes in the incidence rate of hip fractures were estimated to vary by fracture type, i.e., femoral neck or trochanteric fractures, age, and sex, in urban or rural areas in Kyoto Prefecture, Japan from 2008 to 2017. PURPOSE: Our survey in Kyoto Prefecture from 2008 to 2017 showed that the incidence rate of femoral neck fractures is generally increasing. We investigated the differences between urban and rural areas in the changes of the incidence rate over time of femoral neck and trochanteric fractures during the same period. METHODS: Patients aged 65 years and above who sustained hip fractures between 2008 and 2017 and were treated at one of the participating 11 hospitals were included. The ratio of sick beds for acute-term care at the investigated hospitals to total number of beds in the urban area was 16.5% (1863/11,158) and 30.6% (1863/5623) in the rural area. The change in incidence rate was estimated utilizing the population according to the national census conducted in 2010 and 2015. RESULTS: There were 3559 and 6474 hip fractures in the urban and rural areas, respectively. Femoral neck fractures were 1936 (54.4%) and 2813 (43.5%) in each area. The increase of the population-adjusted numbers was marked by neck fractures in males, in both areas. In women, there was a significant increase in femoral neck fractures in the urban area in those aged 85 years and over. For trochanteric fractures, a significant increase was only found in women aged 65 to 74 years in the rural area. CONCLUSION: A regional difference in the secular changes in incidence rate of hip fractures was found in women, not in men, mostly because neck fractures in women increased in the over 85 group in the urban area.
Authors: K Michaëlsson; E Weiderpass; B Y Farahmand; J A Baron; P G Persson; L Zidén; C Zetterberg; S Ljunghall Journal: Osteoporos Int Date: 1999 Impact factor: 4.507
Authors: E K Osnes; C M Lofthus; H E Meyer; J A Falch; L Nordsletten; I Cappelen; I S Kristiansen Journal: Osteoporos Int Date: 2004-07 Impact factor: 4.507