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<i>Summary</i> <p>We assessed the association of TBS with radiographic severity of Colles-type DRFs in female patients aged ≥ 50&#xa0;years. The results indicated a significantly higher incidence of intra-articular DRFs and DUFs in low-TBS group, independent of displacement. Deteriorated bone microarchitecture may be associated with the severity of low-energy osteoporotic DRFs.</p> Purpose <p>This study investigated the effect of the trabecular bone score (TBS), which reflects bone microarchitecture, on the radiographic severity of Colles-type distal radius fractures (DRFs).</p> Methods <p>104 patients aged ≥ 50&#xa0;years with Colles-type DRFs underwent TBS measurements using lumbar spine dual-energy X-ray absorptiometry (DXA) data. Among them, 83 were included after excluding 21 patients with high-energy injuries. Low-TBS was defined as 1.230 or less, on the basis of Japanese reference data. Radiographic fracture severity [presence or absence of intra-articular fractures according to the AO classification and complications of distal ulna fractures (DUFs)] and fracture-displacement parameters (radial inclination, ulnar variance, and palmar tilt) were compared between the low-TBS and non-low-TBS groups. Factors affecting fracture severity were evaluated using the Firth logistic regression model.</p> Results <p>The mean TBS was 1.299 ± 0.084, with 16/83 (19.3%) and 67/83 (80.7%) patients in the low- and non-low-TBS groups, respectively. The incidence of intra-articular fractures (AO type C) was significantly higher in the low-TBS group (93.8%) than non-low-TBS group (35.8%). The incidence of DUFs was significantly higher in the low-TBS group (87.5%) than non-low-TBS group (49.3%). The prevalence of multi-fragmentary fractures (AO type C3) in the low-TBS group (53.3%) was significantly higher than non-low-TBS group (20.8%). No significant differences were observed in the fracture-displacement parameters. Multivariate analysis confirmed that a low TBS was an independent predictor of intra-articular fractures.</p> Conclusion <p>These findings suggest that deterioration of bone microarchitecture may increase the severity of low-energy osteoporotic DRFs, independent of fracture displacement.</p>

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Association between lumbar-spine trabecular bone score and radiographic severity of low-energy Colles-type distal radius fractures in women aged 50 years or older

  • 期刊论文

  • 发表日期：

    2026年2月16日

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  • Yusuke Kubo,
  • Kazuhiko Sonoda,
  • Toshihiko Hara

摘要

Summary

We assessed the association of TBS with radiographic severity of Colles-type DRFs in female patients aged ≥ 50 years. The results indicated a significantly higher incidence of intra-articular DRFs and DUFs in low-TBS group, independent of displacement. Deteriorated bone microarchitecture may be associated with the severity of low-energy osteoporotic DRFs.

Purpose

This study investigated the effect of the trabecular bone score (TBS), which reflects bone microarchitecture, on the radiographic severity of Colles-type distal radius fractures (DRFs).

Methods

104 patients aged ≥ 50 years with Colles-type DRFs underwent TBS measurements using lumbar spine dual-energy X-ray absorptiometry (DXA) data. Among them, 83 were included after excluding 21 patients with high-energy injuries. Low-TBS was defined as 1.230 or less, on the basis of Japanese reference data. Radiographic fracture severity [presence or absence of intra-articular fractures according to the AO classification and complications of distal ulna fractures (DUFs)] and fracture-displacement parameters (radial inclination, ulnar variance, and palmar tilt) were compared between the low-TBS and non-low-TBS groups. Factors affecting fracture severity were evaluated using the Firth logistic regression model.

Results

The mean TBS was 1.299 ± 0.084, with 16/83 (19.3%) and 67/83 (80.7%) patients in the low- and non-low-TBS groups, respectively. The incidence of intra-articular fractures (AO type C) was significantly higher in the low-TBS group (93.8%) than non-low-TBS group (35.8%). The incidence of DUFs was significantly higher in the low-TBS group (87.5%) than non-low-TBS group (49.3%). The prevalence of multi-fragmentary fractures (AO type C3) in the low-TBS group (53.3%) was significantly higher than non-low-TBS group (20.8%). No significant differences were observed in the fracture-displacement parameters. Multivariate analysis confirmed that a low TBS was an independent predictor of intra-articular fractures.

Conclusion

These findings suggest that deterioration of bone microarchitecture may increase the severity of low-energy osteoporotic DRFs, independent of fracture displacement.