Bone mineral density and incidence of hip fracture in Swedish urban and rural women 1987–2002

Rosengren, Björn E., Ahlborg, Henrik G., Gärdsell, Per, Sernbo, Ingemar, Daly, Robin M., Nilsson, Jan-Åke and Karlsson, Magnus K. 2010, Bone mineral density and incidence of hip fracture in Swedish urban and rural women 1987–2002, Acta orthopaedica, vol. 81, no. 4, pp. 453-459, doi: 10.3109/17453674.2010.492762.

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Title Bone mineral density and incidence of hip fracture in Swedish urban and rural women 1987–2002
Author(s) Rosengren, Björn E.
Ahlborg, Henrik G.
Gärdsell, Per
Sernbo, Ingemar
Daly, Robin M.ORCID iD for Daly, Robin M.
Nilsson, Jan-Åke
Karlsson, Magnus K.
Journal name Acta orthopaedica
Volume number 81
Issue number 4
Start page 453
End page 459
Total pages 7
Publisher Informa Healthcare
Place of publication London, England
Publication date 2010
ISSN 1745-3682
Summary Background and purpose Although the incidence of hip fracture during the past 50 years has increased, a break in this trend has been reported in the last decade. Whether this change is attributable to changes in bone mineral density (BMD) or whether it varies between urban and rural regions is unknown.

Methods We evaluated changes in annual hip fracture incidence in women aged ≥ 50 years in one urban population (n = 51,757) and one rural population (n = 26,446) from 1987 to 2002. We also examined secular differences in BMD (mg/cm2), evaluated by single-photon absorptiometry at the distal radius, prevalence of osteoporosis, and several other risk factors for hip fracture in one population-based sample of urban women and one sample of rural women aged 50–80 years at two time points: 1988/89 (n = 257 and n = 180, respectively) and 1998/99 (n = 171 and n = 118, respectively).

Results No statistically significant changes were evident in annual age-adjusted hip fracture incidence per 104 when analyzing all women (–0.01 per year (95% CI: –0.37, 0.35)), rural women (–0.38 per year (-1.05, 0.28)), or urban women (0.19 per year (–0.28, 0.67)). BMD (expressed as T-score) was similar in 1988/99 and 1998/99 when analyzing all women (–0.09 (–0.26, 0.09)), urban women (–0.04 (–0.27, 0.19)), or rural women (–0.15 (–0.42, 0.13)) women.

Interpretation Since no changes in age-adjusted hip fracture incidence and no differences in BMD were found during the study period, changes evident in the other risk factors for hip fracture that we investigated (such as gait velocity and balance) are either of minor importance or are counteracted by changes in other risk factors.
Language eng
DOI 10.3109/17453674.2010.492762
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
Socio Economic Objective 970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Grant ID NHMRC 425849
Copyright notice ©2010, Informa Healthcare
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