- from Johansen et.al. 1990)
Skeletal / soft-tissue injury 骨骼软组织损伤情况
     低能量 Low energy (stab; simple fracture; pistol gunshot wound): 1
     中能量 Medium energy (open or multiple fractures, dislocation): 2
     高能量 High energy (high speed MVA or rifle GSW): 3
     极高能量 Very high energy (high speed trauma + gross contamination): 4
Limb ischemia 肢体局部缺血（超过6小时分数加倍）
     脉搏微弱 灌注正常 Pulse reduced or absent but perfusion normal: 1*
     无脉 毛细血管充盈时间延长 感觉障碍 Pulseless; paresthesias, diminished capillary refill: 2
     无脉 凉 麻痹 无感觉 麻木 Cool, paralyzed, insensate, numb: 3*
Shock 休克
     血压> 90 mm Hg Systolic BP always > 90 mm Hg: 0
     暂时性低血压 Hypotensive transiently: 1
     持续低血压 Persistent hypotension: 2
Age (years) 年龄
     < 30: 0
     30-50: 1
     > 50: 2

* Score doubled for ischemia > 6 hours

MESS大于等于7分需要早期或晚期截肢

【参考资源】

1.http://www.wheelessonline.com/ortho/mangled_extremity_severity_score_mess

2.http://keyjournal.nstl.gov.cn/bitstream/123456789/

3.http://www.rcsed.ac.uk/fellows/lvanrensburg/classification/trauma%20scores/mangled_extremity_scores.htm