Mangled Extremity Severity Score (MESS)
Assign points in four domains (injury energy, limb ischemia, shock, age) and sum.
Calculator
How it works
MESS summarizes injury energy, perfusion, systemic shock, and age. It is one adjunct among vascular exam, warm ischemia time, contamination, and patient goals.
Limits
Modern trauma systems use CT angiography, replantation teams, and damage-control orthopedics beyond any single score.
Educational tool only—not for diagnosis or treatment decisions.