Rutherford classification interactive calculator for chronic limb ischemia.

Rutherford Classification Calculator for CLTI

Select clinical findings in each domain or optionally use numeric perfusion ranges to determine Rutherford category (1-6) for chronic limb threatening ischemia.

1. Claudication (choose best match)

No claudication

No exertional limb pain or normal treadmill test.

Mild claudication

Completes treadmill exercise.

Moderate claudication

Intermittent claudication limiting walking distance but not wheelchair / bedbound.

Severe claudication

Cannot complete standard treadmill exercise.

2. Ischemic rest pain

No rest pain

No nocturnal / recumbent rest pain.

Ischemic rest pain

Resting ankle pressure.

3. Tissue loss (ulcer / gangrene)

No tissue loss

No ulceration or gangrene.

Minor tissue loss

Non-healing ulcer or focal gangrene with pedal ischemia.

Major tissue loss

Extensive tissue loss (above transmetatarsal level) with non-salvageable functional foot.

Optional: Use objective perfusion measurement to help determine category Use measurement

Notes: Objective thresholds follow Rutherford / classic CLI guidance: resting AP < 40 mmHg and TP < 30 mmHg (rest pain), resting AP < 60 mmHg or TP < 40 mmHg (tissue loss). If you check "Use measurement", the selected measurement range will contribute to the computed Rutherford category.

Primary reference: Rutherford classification (Rutherford tables). See details below.

Why this category? (click to expand)

Disclaimer: This calculator is for guidance only and is not a substitute for specialist clinical assessment. Use with clinical judgement.