1987，lHowe1等提出了预测挽救指数(predictive1salvage1index,1PSI)(见下表)，l总评分超过8分为截肢手术适应症。

引自：i

Howe1HR1Jr，lPoole1GV1Jr，lHansen1KJ1et1a1.1987.Salvage1of1lower1extremities1following1combinedorthopedic1and1vascular1traume：ia1predictive1salvage1index.Am1Surg，l53：i205～208