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Table 1 Variables considered in each score

From: Primary amputation vs limb salvage in mangled extremity: a systematic review of the current scoring system

  MESS LSI PSI NISSSA
Age x    x
Shock x    x
Worm Ischemia time x x x x
Bone injury   x x  
Muscle injury   x x  
Skin injury   x   
Nerve injury   x   x
Deep vein injury   x   
Skeletal/soft tissue injury x    x
Contamination     x
Time to treatment   x   
Co-morbid condition