Endocrine Abstracts

Hip fracture remains the most important clinical manifestation of osteoporosis, with many studies demonstrating a relationship between seasons and the incidence and mortality after hip fracture.

Objective: We aimed to identify a seasonal variation (four seasons) in incidence of osteoporotic hip fracture admitted in trauma centers in Bucharest.

Materials and methods: We observed the seasonal variation of 1176 patients, mean age 78.19+/−11.35 years old, with 68.96% over 75 years old, admitted in trauma centers in Bucharest from September 2017 to august 2018 with hip fracture.

Results: In the study population we observe a higher incidence in spring (March–May) with 28.48% (3.33 fracture/day) compared to lower incidence in autumn 21.52% (with 2.7 fractures/day). The highest incidence was registered in January and July and the lowest in February (4.1 fractures/day compared to 2.5). The incidence of fractures per day in the months with snow in Bucharest (January, February and March 2018) was higher than the months without snow regardless of the season, 3.55 compared to 3.1 fractures/day. There is significant difference in age distribution during the year, regardless the season or month (P>0.005).

Conclusion: We observe a slight decrease in incidence of hip fracture from spring to autumn, this can be related to a decrease in neuromuscular function in vitamin D-replete subjects, we need further studies to correlate this effect. We didn’t observe a difference in age distribution with the four classical seasons. The incidence of fractures/day during the snowy months was higher compared to the rest of the year.