Abstract
Introduction
Trabecular bone score (TBS) is partially independent of fracture risk. Reference values for TBS have not been established in official guidelines, and thus clinicians often have difficulty interpreting TBS results. This study aimed to investigate whether reference values for TBS could be a valid indicator for clinical vertebral fracture (CVF).
Materials and methods
This cross-sectional study involved 231 women with CVF and 563 women without CVF aged 60–90 years who underwent dual-energy X-ray absorptiometry during 2019–2023. They were divided into osteoporosis, osteopenia, and normal groups according to bone mineral density of the lumbar spine. Reference values for TBS were defined as low (≤ 1.23), intermediate (1.23–1.31), and high (≥ 1.31).
Results
Among patients without anti-osteoporosis treatment (n = 476), the proportion with low TBS was 36.7% in the CVF group and 10.7% in the control group. The proportion with CVF was higher in the low TBS group than in the intermediate and high TBS groups, especially in the osteoporosis group (p < 0.001). The odds ratio for CVF was higher in the low TBS group than in the intermediate and high especially in patients with normal BMD and osteoporosis. The TBS cut-off values for incidence of CVF in the osteoporosis, osteopenia, and normal groups were 1.224, 1.319, and 1.322, respectively.
Conclusions
The reference value for low TBS (≤ 1.23) was useful as an indicator for CVF, especially in patients with osteoporosis. It is expected that reference values for TBS will be established in official guidelines in the future.
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Abbreviations
- AUC:
-
Area under the curve
- BMD:
-
Bone mineral density
- BMI:
-
Body mass index
- CVF:
-
Clinical vertebral fracture
- DXA:
-
Dual-energy X-ray absorptiometry
- FRAX:
-
Fracture Risk Assessment Tool
- ICC:
-
Intraclass correlation coefficient
- ISCD:
-
International Society for Clinical Densitometry
- SD:
-
Standard deviation
- SERM:
-
Selective estrogen receptor modulator
- TBS:
-
Trabecular bone score
- WHO:
-
World Health Organization
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YO: conceptualization, data curation, formal analysis, writing – original draft. NM: data curation. KW: formal analysis. RO: data curation. YT: data curation. DH: data curation. TG: formal analysis. MM: conceptualization. TE: data curation. HH: data curation. KS: conceptualization, supervision. All authors have reviewed and approved the final manuscript.
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Omichi, Y., Mima, N., Wada, K. et al. Can TBS reference values be a valid indicator for clinical vertebral fracture? A cross-sectional study. J Bone Miner Metab 42, 60–68 (2024). https://doi.org/10.1007/s00774-023-01476-1
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DOI: https://doi.org/10.1007/s00774-023-01476-1