Background: In Sweden 70,000 people suffer fragility fractures annually, including 16,000 hip fractures with one-year mortality of up to 25%. Strategies to prevent falls, improve physical function, and enhance bone strength have shown mixed results.
Aim: To evaluate the incidence of hip and other fragility fractures following a fracture prevention intervention and assess baseline risk factors for long-term fracture outcomes.
Methods: 1,233 rural Swedish women aged 70-100 years in 2002 were followed until 2021 after a primary care-based, non-randomized graded fracture prevention intervention 2002-2004 that included physical activity, fall prevention, and pharmacological treatment tailored to hip fracture risk. Fractures were identified through radiology reports 2002-2021.
Results: The most common fractures occurred in the hip with 236 women sustaining 268 hip fractures with highest incidence in women aged 90-94 years. One-year hip fracture mortality was 27%. Hip fractures occurred in 17.7% of the intervention group (77/434) and 19.9% of controls (159/799, p = 0.36). Repeated fragility fractures occurred in 14.1% of the intervention group and 18.6% of controls (OR 0.71; 95% CI 0.53-1.0, p = 0.047), particularly when one fracture involved the hip (OR 0.54 (95% CI 0.31-0.95), p = 0.037). Increasing age (HR 1.8-4.0), height >167 cm (HR 1.6; 95% CI 1.1-2.2), and weight <60 kg (HR 1.5; 95% CI 1.1-2.0) were significant baseline risk factors.
Conclusions: We noticed a non-significant reduction in hip fractures after 20 years, yet repeated fractures were less frequent in the intervention group suggesting a potential long-term benefit. Older, taller and lighter women were at greater risk for hip fracture.
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