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Diabetes and femoral neck strength: Findings from the hip strength across the menopausal transition study

UNSPECIFIED (2012) Diabetes and femoral neck strength: Findings from the hip strength across the menopausal transition study. Journal of Clinical Endocrinology and Metabolism, 97 (1). 190 - 197. ISSN 0021-972X

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Abstract

Context: Diabetes mellitus is associated with increased hip fracture risk, despite being associated with higher bone mineral density in the femoral neck. Objective: The objective of the study was to test the hypothesis that composite indices of femoral neck strength, which integrate dual-energy x-ray absorptiometry derived femoral neck size, femoral neck areal bone mineral density, and body size and are inversely associated with hip fracture risk, would be lower in diabetics than in nondiabetics and be inversely related to insulin resistance, the primary pathology in type 2 diabetes. Design: This was a cross-sectional analysis. Setting and Participants: The study consisted of a multisite, multiethnic, community-dwelling sample of 1887 women in pre- or early perimenopause. Outcome Measurements: Composite indices for femoral neck strength in different failure modes (axial compression, bending, and impact) were measured. Results: Adjusted for age, race/ethnicity, menopausal stage, body mass index, smoking, physical activity, calcium and vitamin D supplementation, and study site, diabetic women had higher femoral neck areal bone mineral density [+0.25 SD, 95% confidence interval (CI) (+0.06, +0.44) SD] but lower composite strength indices [+0.20 SD, 95% CI (-0.38, -0.03) SD for compression, -0.19 SD, 95% CI (-0.38, -0.003) SD for bending, -0.19 SD, 95% CI (-0.37, -0.02) SD for impact] than nondiabetic women. There were graded inverse relationships between homeostasis model-assessed insulin resistance and all three strength indices, adjusted for the same covariates. Conclusions: Despite having higher bone density, diabetic women have lower indices of femoral neck strength relative to load, consistent with their documented higher fracture risk. Insulin resistance appears to play an important role in bone strength reduction in diabetes. Copyright © 2012 by The Endocrine Society.


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Details

Item Type: Article
Status: Published
Date: 1 January 2012
Date Type: Publication
Journal or Publication Title: Journal of Clinical Endocrinology and Metabolism
Volume: 97
Number: 1
Page Range: 190 - 197
DOI or Unique Handle: 10.1210/jc.2011-1883
Schools and Programs: Graduate School of Public Health > Epidemiology
Refereed: Yes
ISSN: 0021-972X
Date Deposited: 03 Apr 2015 01:03
Last Modified: 05 Jan 2019 16:55
URI: http://d-scholarship.pitt.edu/id/eprint/24245

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