Lower-Body Fractures and the Risk of Dementia: A Nationwide Population-Based Study

Area of Science:

• Gerontology
• Neurology
• Orthopedics

Background:

• Observational studies suggest a link between physical activity and dementia.
• The specific risk of dementia following lower-body fractures in the elderly requires investigation.

Purpose of the Study:

• To assess the association between lower-body fractures and the subsequent risk of dementia in an elderly population.

Main Methods:

• A population-based matched cohort study was constructed using South Korean National Health Insurance Service data.
• 53,776 individuals with lower-body fractures were matched with controls based on sex, age, and time.

Main Results:

• Lower-body fractures were independently associated with an increased risk of dementia (aHR=1.55).
• The risk of dementia was higher compared to upper-body fractures (aHR=1.19).
• Dementia developed in 6.6% of subjects with lower-body fractures versus 4.9% of controls.

Conclusions:

• Findings support the protective role of physical activity against dementia.
• Emphasizes the importance of fracture prevention strategies in the elderly for cognitive health.