Time trends in proximal humeral fractures from 1944 to 2020 - A cohort study in Malmö, Sweden
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View abstract on PubMed
Summary
This summary is machine-generated.The incidence of proximal humeral fractures (PHF) in Malmö, Sweden, increased from 1944 to 1977, then decreased until 2020. Seasonal fracture patterns were noted in earlier decades but not recently.
Area Of Science
- Orthopedics
- Epidemiology
- Public Health
Background
- Proximal humeral fractures (PHF) incidence trends are unclear in recent decades.
- Previous studies suggest increasing PHF rates from the 1950s to 1990s.
Purpose Of The Study
- To determine age- and sex-adjusted incidence trends of PHF in Malmö, Sweden, from 1944 to 2020.
- To analyze incidence variations by age and month, and compare recent decades with earlier periods.
Main Methods
- Retrospective review of radiology examinations for adult PHF (≥18 years) in Malmö.
- Inclusion of 17 sample years between 1944 and 2020.
- Application of joinpoint analyses to identify incidence time trends.
Main Results
- A total of 3,031 PHF were identified over 3,231,161 person-years.
- Incidence increased from 52/100,000 in 1944 to 120/100,000 in 1977, then decreased to 85/100,000 in 2020.
- Women constituted 73% of cases, with a mean age of 69 (men: 59).
- Seasonal variations (more fractures in winter) were observed in earlier decades but not recently.
Conclusions
- PHF incidence in Malmö rose from the 1940s until 1977, followed by a decline until 2020.
- The study highlights evolving epidemiological patterns of proximal humeral fractures.
- Observed changes in seasonal fracture distribution may reflect environmental or behavioral shifts.
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