1 Before you use it
What it is
The objective companion to BASDAI and BASFI — five clinician-measured items: cervical rotation, tragus-to-wall, lateral lumbar flexion, modified Schober, and intermalleolar distance.
When to reach for it
Baseline and periodic review in established axial spondyloarthritis, and as the objective anchor when BASDAI and BASFI disagree.
Patterns it serves · 1
2 Giving it
Scoring
Each measurement converted to a 0–2 or 0–10 score depending on the version, then averaged. State which version you used.
Measure the same way every time — landmarks, position and instructions all move the number.
What it doesn’t measure
Disease activity or symptoms — and it is not sensitive to short-term change.
3 Reading the score
Interpreting it
Higher means less mobility.
It changes slowly. BASMI is a structural measure, so month-to-month change is not expected — do not read noise as deterioration.
Is the change real?
Student trap. Re-measuring it every fortnight and reading the wobble as progression. It's a structural measure — space it out.
Official source: nass.co.uk. We don't host the form.
This is a learning tool. It does not diagnose patients and does not replace your clinical educator.
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CliniStudy is in beta. One tap is enough — it decides what gets fixed first.