Trabecular Bone Score Improves Fracture Risk Discrimination in Postmenopausal Rheumatoid Arthritis Patients Receiving...

Area of Science:

• Rheumatology
• Osteoporosis Research
• Medical Imaging Analysis

Background:

• Bone mineral density (BMD) may lack sensitivity for predicting osteoporotic fractures in rheumatoid arthritis (RA) patients, particularly those on glucocorticoids.
• Trabecular bone score (TBS) offers a novel assessment of bone microarchitecture and strength, presenting a potential alternative to BMD.

Purpose of the Study:

• To evaluate the utility of TBS in assessing osteoporotic fracture risk in postmenopausal RA patients receiving glucocorticoids.
• To determine if combining TBS with BMD enhances fracture risk prediction compared to BMD alone.

Main Methods:

• A cross-sectional study analyzed data from 64 postmenopausal RA patients on glucocorticoids.
• TBS was calculated from lumbar spine BMD using specialized software.
• Fracture presence (vertebral or non-vertebral) was identified at the time of BMD measurement.

Main Results:

• Lower TBS values were significantly associated with osteoporotic fractures.
• A TBS cut-off of <1.24 demonstrated high accuracy (79% sensitivity, 84% specificity) for fracture discrimination.
• Combining a TBS threshold (<1.24) with a BMD T-score ≤ -2.5 improved fracture risk identification (p=0.003).

Conclusions:

• Reduced TBS is linked to osteoporotic fractures in RA patients on glucocorticoids.
• Integrating TBS with BMD enhances fracture risk discrimination in this patient group.
• TBS serves as a valuable supplementary tool for identifying high-risk individuals.