BASMI (linear)

Metrology index using 5 clinician measurements. Enter means where left/right values differ. Refer to NASS Table 2 for the reference tabular scoring.

For clinicians only. This tool is for healthcare professionals and clinical education only. It does not diagnose, replace clinical judgement, or replace specialist assessment. Any decisions about a patient must be based on full clinical assessment, investigations where appropriate, and current clinical guidelines.

This calculator applies the linear BASMI formula (van der Heijde et al., 2008). For BASMI-2 or BASMI-3 tabular scoring refer to Table 2 of the NASS Bath Indices guide.

Measurements

Tragus-to-wall distance (mean L/R)

cm

Lumbar side flexion (mean L/R)

cm

Modified Schober / lumbar flexion

cm

Cervical rotation (mean L/R)

degrees

Intermalleolar distance

cm

Live result

Enter all five measurements.

Sources

For clinicians only. This tool is for healthcare professionals and clinical education only. It does not diagnose, replace clinical judgement, or replace specialist assessment. Any decisions about a patient must be based on full clinical assessment, investigations where appropriate, and current clinical guidelines.

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