🧱 Vertebral Compression Fracture Height Loss (Genant)
UseSpine imaging: standing full-spine films, flexion/extension views, CT/MRI — scoliosis follow-up, adult deform…
SourceGenant HK, et al. Vertebral fracture assessment using a semiquantitative technique. J Bone Miner Re…
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.
Methodology · worked example, guidelines & full notes
Lateral thoracolumbar radiograph or sagittal CT.
When to use
Spine imaging: standing full-spine films, flexion/extension views, CT/MRI — scoliosis follow-up, adult deformity, stenosis reporting and surgical planning.
How it works
Wedge (anterior) loss < 20%: grade 0 (normal) Wedge (anterior) loss 20–25%: grade 1 (mild) Wedge (anterior) loss 25–40%: grade 2 (moderate) Wedge (anterior) loss > 40%: grade 3 (severe) Biconcave (middle) loss < 20%: grade 0 (normal) Biconcave (middle) loss 20–25%: grade 1 (mild) Biconcave (middle) loss 25–40%: grade 2 (moderate) Biconcave (middle) loss > 40%: grade 3 (severe) Crush (posterior) loss < 20%: grade 0 (normal) Crush (posterior) loss 20–25%: grade 1 (mild) Crush (posterior) loss 25–40%: grade 2 (moderate) Crush (posterior) loss > 40%: grade 3 (severe)
Key points
- Lateral thoracolumbar radiograph or sagittal CT.
- Each value is graded against published reference ranges.
- Measurement technique and positioning change the numbers — compare like with like on follow-up.
- Part of the YuanDoctor MSK measurement topic.
References
- Genant HK, et al. Vertebral fracture assessment using a semiquantitative technique. J Bone Miner Res 1993;8:1137-1148
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Anterior height Ha | 18 mm |
|---|---|
| Middle height Hm | 22 mm |
| Posterior height Hp | 26 mm |
| Adjacent normal posterior height (optional) | 27 mm |
→Genant grade2
- Wedge (anterior) loss：30.8 % → 25–40%: grade 2 (moderate)
- Biconcave (middle) loss：15.4 % → < 20%: grade 0 (normal)
- Crush (posterior) loss：3.7 % → < 20%: grade 0 (normal)
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using Vertebral Compression Fracture Height Loss (Genant)?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- Does Vertebral Compression Fracture Height Loss (Genant) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is Vertebral Compression Fracture Height Loss (Genant) calculated in practice? Can you show a worked example?
- Inputs: Anterior height Ha 18 mm, Middle height Hm 22 mm, Posterior height Hp 26 mm, Adjacent normal posterior height (optional) 27 mm → Result: Genant grade 2（Wedge (anterior) loss: 30.8 % → 25–40%: grade 2 (moderate), Biconcave (middle) loss: 15.4 % → < 20%: grade 0 (normal), Crush (posterior) loss: 3.7 % → < 20%: grade 0 (normal)）