• Am. J. Med. Sci. · Nov 2022

    Higher BMI and lower femoral neck strength in males with type 2 diabetes mellitus and normal bone mineral density.

    • Cuiping Zhao, Jingbao Kan, Zhe Xu, Dan Zhao, Aijiao Lu, Yun Liu, and Xinhua Ye.
    • Department of Geriatrics, Changzhou No.2 people's Hospital, Affiliated to Nanjing Medical University, 213000, Changzhou, China.
    • Am. J. Med. Sci. 2022 Nov 1; 364 (5): 631637631-637.

    BackgroundType 2 diabetes mellitus (T2DM) and osteoporosis are two age-associated diseases. Body mass index (BMI) is positively associated with osteoporosis or osteopenia in T2DM population. Bone mineral density does not necessarily reflect the alterations in bone microarchitecture. Our aims were to investigate the relationship between BMI and femoral neck strength in males with T2DM and normal range of bone mineral density (BMD).MethodsThis study enrolled 115 males (median age 53.3 years) with T2DM and normal BMD. Femoral neck strength indexes, including compression strength index (CSI), bending strength index (BSI), impact strength index (ISI), were calculated by parameters generated from Dual-energy X-ray absorptiometry software. Pearson correlation analysis was performed to evaluate the relationships between BMI and femoral neck strength variables.ResultsCompared with T2DM-normal weight group, T2DM-overweight group and T2DM-obesity group had a higher femur neck and total femur BMDs. Cross sectional moment of inertia (CSMI), cross sectional area (CSA), section modulus (SM) were significantly higher (all p<0.05), and buckling ratio (BR) (6.35±2.08 vs 7.18±1.71) was lower in T2DM-obesity group than in T2DM-normal weight group. Compared with T2DM-normal weight group, CSI (all p<0.001), BSI (all p<0.001), ISI (all p<0.001) were significantly reduced in T2DM-obesity and T2DM-overweight groups. Pearson correlation analysis indicated that BMI was negatively correlated with CSI (r= - 0.457, p<0.001), BSI(r = -0.397, p<0.001), ISI (r = - 0.414, p<0.001).ConclusionsHigher BMI is associated with lower femoral neck strength in males with T2DM and normal BMD. It implies that femoral neck fracture risk increases in obese and diabetic males, despite their high bone density.Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.

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