mdcalc.com | Mangled Extremity Severity Score (MESS Score)

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NOTE: All calculations must be re-checked and should not be used alone to guide patient care. See disclaimer.

Limb Ischemia for >6 Hours?	Yes Limb Ischemia Points x2
Limb Ischemia	Reduced Pulse but Normal Perfusion +1 Pulseless, Paresthesias, Slow Capillary Refill +2 Cool, Paralysis, Numb/Insensate +3
Patient Age Range	<30 years old 0 30-50 years old +1 50 years old +2
Shock	SBP > 90 Consistently 0 Hypotension Transiently +1 Persistent Hypotension +2
Injury Mechanism	Low Energy (stab, gunshot, simple fracture) +1 Medium Energy (dislocation, open/multiple fractures) +2 High Energy (high speed MVA or rifle shot) +3 Very High Energy (high speed trauma with gross contamination) +4
MESS Score	points
A score >7 predicts a low likelihood of limb/extremity viability.

Mangled Extremity Severity Score (MESS Score)