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Decrease of trabecular bone score reflects severity of Crohn's disease: results of a case-control study.

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Summary
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Trabecular bone score (TBS), unlike bone mineral density (BMD), correlates with Crohn's disease severity. This suggests TBS may better identify fracture risk in inflammatory bowel disease patients.

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Area of Science:

  • Gastroenterology
  • Endocrinology
  • Radiology

Background:

  • Inflammatory bowel diseases (IBD) like Crohn's disease (CD) are associated with osteoporosis and osteopaenia.
  • Trabecular bone score (TBS) assesses bone microarchitecture, independent of bone mineral density (BMD).

Purpose of the Study:

  • To compare bone quantity and quality in Crohn's disease patients versus healthy controls.
  • To investigate the correlation between TBS and disease severity in CD.

Main Methods:

  • A case-control study involving 50 CD patients and 25 healthy controls.
  • Exclusion of postmenopausal women and patients on long-term corticosteroids.
  • Assessment of lumbar BMD and TBS, with comparison based on CD disease classification (B1, B2, B3) and anti-TNF-α therapy.

Main Results:

  • No significant difference in mean lumbar BMD or TBS between CD patients and controls.
  • Significantly lower TBS, but not BMD, in CD patients with stricturing (B2) or penetrating (B3) disease compared to luminal (B1) disease.
  • Lower mean TBS in patients on anti-TNF-α therapy, though not statistically significant.

Conclusions:

  • TBS, unlike BMD, correlates with Crohn's disease severity.
  • TBS may be a more sensitive indicator for identifying fracture risk in CD patients than BMD alone.