Factors associated with mortality following hip fracture in Japan

Abstract

Various factors have been reported to increase the risk of death following hip fracture. However, our review of the literature indicates that previous studies were generally performed based on a rough classification of comorbidities. In this study, comorbidities were classified in detail, and the risk of death following hip fracture was investigated. Four hundred and eighty patients with hip fracture were enrolled. The patients' comorbidities and walking ability before injury were investigated using their own or their family's reports or their medical history, and the residences where the subjects were taken after discharge were recorded. Subsequently, the patients or their family were interviewed about whether they were alive or dead on January 1, 2002, by mail or telephone. A survival curve was drawn based on the Kaplan-Meier method. Cox proportional hazards regression models were used to determine the risk factors for death. An expected mortality rate for the Japanese population from 1991 to 2002 was obtained from a life table published by the Ministry of Health, Labour, and Welfare and compared to our observed mortality. The 1-year survival rate following hip fracture was 88.5%, which was a little lower than the expected survival rate. In subsequent years, the survival rate was lower than the expected survival rate. Being male and/or having a trochanteric fracture were risk factors for death. Patients who walked with a walker or other support or were nonambulatory before injury had an increased risk of death. Among the comorbidities, dementia, diabetes mellitus, and a history of gastrectomy or colonectomy were risk factors for death. Among the complications, pneumonia during hospitalization was a risk factor for death.

The Impact of Prefracture and Hip Fracture Characteristics on Mortality in Older Persons in Brazil

“…In our study, we did not see a difference in mortality between patients undergoing arthroplasty versus patients undergoing osteosynthesis, which is in agreement with mortality reported by Garcia et al [15] and others [18,33,37]. However, others have reported an increased mortality rate for patients who had arthroplasties [39,54]. It has been suggested the reason for this increased mortality after arthroplasty could be higher use of arthroplasty with older age, but so far the evidence is inconclusive [18,54].…”

Predictors of early mortality after hip fracture surgery

“…Pneumonia is common in the postoperative course of HFS patients [17] and has been associated with early readmission [11,18]. Our findings concur with previous studies that demonstrate the development of postoperative pneumonia is associated with up to a fivefold increase in mortality following HFS [19]. Interestingly, however, postoperative pneumonia did not correlate with the presence of COPD as a pre-existing comorbidity in our cohort.…”

Detecting young Japanese adults with undetected low skeletal bone density using panoramic radiographs

“…2 Being male and having a trochanteric fracture were risk factors for death in 480 Japanese men and women with hip fractures. 18 In this study, we showed that it may be possible to identify adult men aged 40 years or younger who are at risk of having low skeletal BMD by using the MCW determined from panoramic radiographs. If we identify such men in dental clinics and refer them to medical professionals for further investigation and lifestyle intervention, the mortality related to osteoporotic fractures in men could be greatly reduced.…”