Sample Spine TBS (Trabecular Bone Score) Report
The trabecular bone score (TBS) is a textural
measurement derived from lumbar spine dual-energy
X-ray absorptiometry (DXA) images.
It is an
■ It's a better predictor of fracture risk than DXA scores alone.
■ The TBS score is unaffected by abnormal bony outgrowths (osteophytes) on the spine of arthritic patients. In contrast, bone density scores of the spine are often abnormally high in people with osteoarthritis of the spine.
■ The TBS score is a better indicator of bone strength than a bone density T-score.
■ TBS determinations have high reproducibility with values ranging from 1.1% - 1.9% C.V.
■ The TBS report is generated simultaneously with the standard DXA spine printout so it's fast and doesn't involve any extra time.
The images below show examples of dense and porous trabecular bone in vertebrae. This is what the TBS software measures.
Images & captions courtesy of
TBS Insight, trademark of
1. GE spine TBS report
2. Hologic TBS spine report