Update on the utility of trabecular bone score (TBS) in clinical practice for the management of osteoporosis: a systematic review by the Egyptian Academy of Bone and Muscle Health

Abstract

Abstract Trabecular bone score (TBS) is a grayscale textural assessment resulting from a computed evaluation of pixel gray-level variations in previously obtained lumbar spine DXA images. It is an index of bone microarchitecture correlated with parameters of bone strength. Higher values of TBS indicate a better microarchitecture, whereas lower values indicate a degraded microarchitecture. TBS can be used alongside Fracture Risk Assessment tool “FRAX” and bone mineral density (BMD) to enhance the assessment of fracture risk and to inform treatment initiation and monitoring. A systematic review was carried out aiming to update the evidence on the clinical use of the TBS in the management of both primary and secondary osteoporosis. Results revealed that in both primary and secondary osteoporosis, TBS enhances the prediction of fracture risk, and when adjust with BMD and clinical risk factors, it is able to inform the decision-making process regarding initiating osteoporosis therapy and the choice of anti-osteoporosis medication. Evidence also implies that TBS provides valuable adjunctive information in monitoring osteoporosis therapy. In conclusion, this work provides an up-to-date evidence-based review and recommendations which informs the utility of trabecular bone score in standard clinical practice.

Keywords

• Trabecular bone score
• TBS
• DXA
• BMD
• Bone mineral density
• Osteoporosis