Risk Factors for Bone Microarchitecture Deficits in Elderly Men with Type 2 Diabetes
Overview
In older men, type 2 diabetes mellitus (T2DM) is associated with smaller bone size and cortical deficits, which may contribute to increased skeletal fragility. Longer diabetes duration and insulin use correlate with specific impairments in bone microarchitecture and strength, increasing fracture risk.
Background
Fragility fractures pose a significant health burden, with increased risk and mortality observed in patients with T2DM. Despite normal or elevated areal bone mineral density in T2DM, bone fragility is paradoxically increased, suggesting microarchitectural deficits. High-resolution peripheral quantitative computed tomography (HR-pQCT) allows detailed assessment of bone microarchitecture, but data in older men with T2DM remain limited. Understanding diabetes-related factors influencing bone quality is critical for fracture prevention.
Older men with T2DM have significantly smaller total cross-sectional and cortical areas at the distal and diaphyseal tibia compared to non-diabetic men.
Trabecular bone indices and cortical porosity do not differ significantly between T2DM and non-T2DM groups overall.
Among men with T2DM, diabetes duration ≥10 years is associated with increased cortical porosity and greater trabecular thickness at the distal radius.
Insulin use in T2DM men correlates with reduced cortical area and thickness and decreased failure load, indicating compromised bone strength.
Lower cortical area, thickness, bone mineral density, and failure load at distal sites are linked to higher risk of incident nonvertebral fractures in T2DM men.
Clinical Implications
Clinicians should recognize that older men with T2DM may have smaller bone size and cortical deficits contributing to fracture risk despite normal bone density measurements. Longer diabetes duration and insulin therapy are important factors associated with bone microarchitectural deterioration and reduced bone strength. These findings highlight the need for targeted fracture risk assessment and prevention strategies in this population.
Conclusion
In elderly men, T2DM is associated with specific deficits in bone size and cortical microarchitecture that likely contribute to increased skeletal fragility. Diabetes duration and insulin use further exacerbate these bone quality impairments, underscoring the importance of comprehensive bone health evaluation in this group.
References
MrOS Study Group 2024 -- Identifying Risk Factors for Bone Microarchitecture Deficiencies in Elderly Males with Type 2 Diabetes
by Malak Faraj, Ann V Schwartz, Andrew J Burghardt, Dennis Black, Eric Orwoll, Elsa S Strotmeyer, Eric Vittinghoff, Marta Fogolari, Silvia Angeletti, Giuseppe Banfi, Giovanni Lombardi, Gina Woods, Li-Yung Lui, Mary Bouxsein, Nicola Napoli
Federal prosecutors allege that a Florida physician and research staff fabricated clinical trial records that were submitted into database systems used to evaluate investigational drugs.
