Patient Age: Less than 30 years old (0 points) 30 to 50 years old (1 point) More than 50 years old (2 points)

Extremity Injury Type: Low-energy wound (1 point) Medium-energy wound (2 points) High-energy wound (3 points) Very high-energy wound (4 points)

Ischemia of Wounded Limb: Reduced pulse, normal perfusion <6h (1 point) Reduced pulse, normal perfusion >6h (2 points) No pulse, poor refill, parasthesias <6h (2 points) No pulse, poor refill, parasthesias >6h (4 points) Cool, numb extremity <6h (3 points) Cool, numb extremity >6h (6 points)

Hypotension and Shock: Systolic BP > 90 mmHg (0 points) Transient hypotension (1 point) Persistent hypotension (2 points)