The incidence of cervical and trochanteric fractures of the proximal femur in 1999 in Niigata Prefecture, Japan

Abstract

The purpose of this study was to determine the incidence of cervical and trochanteric fractures of the proximal femur in 1999 in Niigata Prefecture, Japan, and to compare this incidence with those previously reported in Niigata in 1985, 1987, 1989, and 1994. The authors visited all hospitals within Niigata Prefecture having an orthopedic department and reviewed the medical records and radiographs of all patients who sustained such fractures in 1999. The population of Niigata Prefecture was determined in 1999 to be 2 486 999 (1 208 195 males and 1 278 804 females). The population over 65 years of age was 515 290 (210 564 males and 304 726 females), representing 20.7% of the total population. In 1999, there were 1697 cervical or trochanteric fractures, in 400 males and 1297 females, with a male-to-female ratio of 1 : 3.2. The incidence of these fractures in persons over 65 years of age was 308.7 fractures per 100 000 per year. This incidence increased from 1985 to 1989 and from 1989 to 1994, but after that, the rate of increase in incidence from 1994 to 1999 slowed down slightly. This suggests that the prevention of fractures in the elderly population in Niigata Prefecture influenced the lower ratio.

Differences in monthly variation, cause, and place of injury between femoral neck and trochanteric fractures: 6-year survey (2008-2013) in Kyoto prefecture, Japan

“…Our previous investigation in the Kyoto prefecture between 2008 and 2010 suggested that the incidence of trochanteric fracture was similar in urban and rural areas whereas the incidence of neck fracture had higher rate in urban areas than in rural areas (9); these results support those previously reported in Norway (10). There has been a noted increase in the incidence of neck fracture (11) compared to that of total hip fractures (12,13) in Japan. The differences might suggest the existence of the distinctive risk factors for each fracture.…”

Fracture incidence in nursing homes in Japan

“…Morita et al [12] studied the prefecture-wide hip fracture incidence in Niigata (population, 2,486,999), and Sakuma et al [13] studied hip fracture incidence in Sado City (population, 70,011) in Niigata Prefecture. When their data for women were ageadjusted to our study population, hip fracture incidence was calculated to be 9.7 and 9.9 per 1,000 person-years, in studies by Morita et al [12] and Sakuma et al [13], respectively. In comparison, hip fracture incidence in women in our study (14.9 per 1,000 person-years) was about 1.5-fold higher.…”

Development of a Simple Food Frequency Questionnaire to Estimate Intakes of Calcium and Other Nutrients for the Prevention and Management of Osteoporosis

“…Osteoporosis is characterized by generalized skeletal fragility, and fractures due to osteoporosis have rapidly increased in Japan ( 1 ). In this situation, prevention and management of this disease is becoming more enhanced in clinical medicine and public health.…”