Background: Age related bone loss is widely accepted as related to decreased serum levels of circulating sex hormones. Epidemiological data also show distal radius fractures in men to be a sensitive marker of bone fragility. The aim of this study was to assess if men with a history of distal radius fracture have lower bone mass density (BMD), lower free androgen index (FAI), lower total testosterone (T) and lower bio-available testosterone (Bio-T) than healthy age-matched controls.
Patients And Methods: A case-control study is based on consecutive cases treated for low energy distal radius fracture at our department and age-matched controls. Thirty-nine men treated between 1997-2004 and 45 age-matched controls underwent calcaneal bone density measurements (t-score) and analyses of T, Bio-T and serum hormone binding globulin (SHBG).
Results: The fracture group had lower BMD (p < 0.01) and lower FAI (p = 0.01). Linear regression analysis showed a correlation between Bio-T and t-scores (p = 0.03). Using analysis of covariance, a significant difference with lower Bio-T in the fracture group was shown.
Conclusion: Bio-T seems to correlate with BMD in elderly men and may serve as a marker for increased fracture risk in this patient group.
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