Trabecular Bone Score (TBS) and Bone Mineral Density (BMD) Analysis by Dual X-ray Absorptiometry (DXA) in Healthy Brazilian Children and Adolescents: Normative Data

Overview

Journal Arch Osteoporos

Publisher Springer

Date 2023 Jun 15

PMID 37318639

Authors

Melissa Mariti Fraga

Filipe Pedroso de Sousa

Vera Lucia Szejnfeld

Charlles Heldan de Moura Castro

Marcelo de Medeiros Pinheiro

Maria Teresa Terreri

Affiliations

Soon will be listed here.

Abstract

Purpose: To establish normative data for trabecular bone score (TBS) and bone mineral density (BMD) measurements using dual energy X-ray absorptiometry (DXA) in healthy Brazilian children and adolescents.

Methods: Healthy children and adolescents, aged 5 to 19 years, underwent medical interview, physical examination with anthropometric measurement, pubertal stage evaluation, and bone densitometry by DXA (Hologic QDR 4500). Boys and girls were divided into 2 age groups: 5-9 years old (children) and 10-19 years old (adolescents). BMD and bone mineral content (BMC) were measured following standard procedures. TBS measurements were performed using the TBS Insight ® v3.0.3.0 software.

Results: A total of 349 volunteers were enrolled in this cross-sectional study. Reference values were defined for each group of children and adolescents divided into 3-year age groups. Girls had lower values of TBS compared to boys (1.356 ± 0.116 and 1.380 ± 0.086 respectively, p = 0.029). For both boys and girls, BMC and spine BMD measurements were significantly higher in adolescent than in children (p = 0.0001; p = 0.0001; p = 0.0001, p = 0.0001, respectively). TBS range increased as pubertal development progressed. In both girls and boys, a 1-year increase in age was associated to a 0.013 increase in TBS. Body mass was a significant determinant for TBS. In girls, a 1 kg/m increase in BMI was associated to an average TBS increase of 0.008.

Conclusion: Our findings reinforce the evidence that TBS varies according to age, sex, and pubertal stage in healthy children and adolescents. This study established reference values for TBS in healthy Brazilian children and adolescents which can be used as normative data for this population.

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