Orthopaedics · Trauma · Emergency Medicine
Mangled Extremity Severity Score (MESS) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Result
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Clinical inputs
- Skeletal / soft-tissue injury
- Limb ischemia
- Ischemia duration >6 hours (doubles ischemia points)
- Shock
- Age
Primary source
Johansen K et al. Objective criteria accurately predict amputation following lower extremity trauma. J Trauma. PMID: 2342140. Scope: MESS sums skeletal/soft-tissue injury (1–4), limb ischemia (1–3, doubled if >6 hours), shock (0–2), and age (0–2); MESS ≥7 predicted amputation with high accuracy in the original cohorts. (1990)
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