Osteoporosis International

, Volume 16, Issue 5, pp 562–567

Forearm bone mineral density in an unselected population of 2,779 men and women—The HUNT Study, Norway

  • Siri Forsmo
  • Arnulf Langhammer
  • Lisa Forsen
  • Berit Schei
Original Article

DOI: 10.1007/s00198-004-1726-y

Cite this article as:
Forsmo, S., Langhammer, A., Forsen, L. et al. Osteoporos Int (2005) 16: 562. doi:10.1007/s00198-004-1726-y

Abstract

The fracture incidence in Norway is among the highest in Europe, presumably due to osteoporosis. As part of a multipurpose health study in the county of Nord-Trøndelag, Norway (the HUNT study), a 5% randomly selected sample (n=4,646) of the population >19 years of age was invited to undergo single X-ray absorptiometry (SXA) of the forearm. A total of 1,274 men (50.5 years) and 1,505 women (49.9 years) participated (60%). The aim of the study was to describe the variation in bone mineral density (BMD) and the prevalence of forearm BMD 2.5 standard deviations (SD) below the mean value for young adults in an unselected population sample. In women the BMD remained stable until the age of 50 years, whereupon a strong decline in BMD was observed. In men, a BMD increase was observed until about the age of 40 years; the decline after the age of 65 was, however, similar to that in women. Based on age and gender-specific reference values, the age-adjusted prevalence of T-scores <−2.5 SD in women and men aged 50–69 years was 16.0% and 5.6%, respectively. In the age group of 70 years or older the prevalence was 65.8% and 30.6% for women and men, respectively. The accelerated BMD reduction in women aged 50–65 explains the higher prevalence of T-score <−2.5 SD in elderly women than in men. Further studies on bone loss and falls are required to explain the high fracture incidence in Norway.

Keywords

Bone densityDensitometryForearmOsteoporosisPopulationPrevalence

Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2004

Authors and Affiliations

  • Siri Forsmo
    • 1
  • Arnulf Langhammer
    • 2
  • Lisa Forsen
    • 3
  • Berit Schei
    • 1
  1. 1.Department of Public Health and General Practice, Norwegian University of Science and TechnologyMedisinsk-teknisk senterTrondheimNorway
  2. 2.HUNT Research Centre, Department of Public Health and General PracticeNorwegian University of Science and TechnologyVerdalNorway
  3. 3.Norwegian Institute of Public HealthOsloNorway