Epidemiology of hip fractures in Okinawa, Japan

BMC Musculoskelet Disord

Ikeda

et al. 2013

BackgroundTo investigate the differences in the characteristics of femoral neck and trochanteric fractures between urban and rural areas of Kyoto Prefecture in Japan.MethodsFracture type (neck vs. trochanteric), age, sex, place where fracture occurred (indoors vs. outdoors), and cause of injury were surveyed among patients aged ≥65 years who sustained hip fractures between 2008 and 2010 and who were treated at 1 of 13 participating hospitals (5 urban, 8 rural). The ratio of sick beds to total number of beds at the participating hospitals was 19.6% (2,188/11,158) in the urban area and 34.9% (1,963/5,623) in the rural area. We also investigated the incidence of hip fracture in Tango medical district as a representative rural area.ResultsThere were 1,346 neck (mean age, 82.4 years) and 1,606 trochanteric fractures (mean age, 85.0 years). The ratio of neck to trochanteric fractures was higher in the urban area than in the rural area in all age groups (65–74, 75–84, and ≥ 85 years). There were no apparent differences in place or cause of injury. The incidence of hip fracture in the women of Tango medical district was lower than the national average.ConclusionsThere was a difference in the ratio of neck to trochanteric fractures between urban and rural areas. This difference is estimated to be caused by the high and low incidence of neck fracture in urban and rural areas, respectively.

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Urban versus rural differences in the occurrence of hip fractures in Japan’s Kyoto prefecture during 2008–2010: a comparison of femoral neck and trochanteric fractures

BMC Musculoskelet Disord

Ikeda

et al. 2013

“…Data regarding complications were not available in the present study, but previous studies suggest that patients who experience a neck fracture have higher body fat percentages (16), higher body mass indices (BMIs), undergone treatment for hypertension (17), and lower levels of 25(OH)D (18). Furthermore, a higher prevalence of lifestyle-related diseases, such as diabetes and hypertension in the Okinawa prefecture, is thought to be related to a high incidence of hip fractures with a relatively high N/T ratio compared with the national average in Japan (15,19). The influence of westernization on dietary habits and dwelling environment, which is associated with the increase in lifestyle-related diseases in Japan, is considered to be higher among urban residents than among rural residents.…”

Section: Discussionmentioning

confidence: 99%

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

Matsumura

et al. 2016

ccmbm

“…of FN fracture (20). Worsening collagen crosslinking is a major candidate related to bone fragility other than BMD, which is strongly affected by metabolic syndrome, such as diabetes (21).…”

Section: @ C I C E D I Z I O N I I N T E R N a Z I O N A L Imentioning

confidence: 99%

New quantitative ultrasound techniques for bone analysis at the distal radius in hip fracture cases: differences between femoral neck and trochanteric fractures

Sakai

et al. 2017

ccmbm

SummaryBackground. Ample evidence on etiological and pathological differences between femoral neck and trochanteric fracture cases suggests the possibility of individualized treatment. There are many issues related to areal bone mineral density and other quantitative computed tomography parameters of the proximal femur. Although osteoporosis is a systemic problem, little has been reported regarding differences in bone structural parameters, including bone mineral density, between them in regions other than the proximal femur. Methods. Participants were consecutive female patients >50 years of age admitted to the Saiseikai Suita Hospital (Osaka prefecture, Japan) for their first hip fracture between January 2012 and September 2014. Cortical thickness (CoTh, mm), volumetric trabecular bone mineral density (TBD, mg/cm 3 ), and elastic modulus of trabecular bone (EMTb, GPa) were obtained as the new QUS parameters using the LD-100 system (Oyo Electric, Kyoto, Japan).The mean values of these parameters were compared between femoral neck and trochanteric fracture cases. In addition, correlations between age and each QUS parameter were investigated for each fracture type. A receiver operating characteristic (ROC) curve analysis was performed to examine the degree of effect each parameter on the fracture types. The area under the curve (AUC) for each parameter was compared to the AUC for age. Results. There were 63 cases of femoral neck fracture (mean age, 78.2 years) and 37 cases of trochanteric fracture (mean age, 85.9 years). Mean TBD and EMTb were significantly higher for femoral neck fractures. There were significant negative correlations between QUS parameters and age for femoral neck fractures (P < 0.005). The regression lines for femoral neck fractures were above those for trochanteric fractures for TBD and EMTb. AUCs were 0.72 for age, and 0.61, 0.65, and 0.65 for CoTh, TBD, and EMTb, respectively. Conclusions. The new QUS parameters indicated that TR fracture cases were more osteoporotic than were FN fracture cases, even at the distal radius. There might be systemic differences between them, in addition to localized factors at the proximal femur. BackgroundHip fracture, one of the primary osteoporotic fractures, has a profound influence not only on decreasing healthy life expectancy but also the length of the lifespan overall. Although the recent decline of its incidence has been suggested even in Japan, the number of new patients continues to increase tremendously due to the rapid increase in the elderly population (1). Fracture prevention is a major health and socioeconomic concern in many countries. There are two types of hip fracture, namely femoral neck fracture (FN fracture) and trochanteric fracture (TR fracture). There is a lot of evidence to indicate etiological and pathological differences between them, suggesting the possibility of individualized treatment to improve prevention of hip fractures (2, 3). Among these differences, there are many issues related to areal bone mineral density (areal BMD) a...