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AAST Bladder Injury Scale AAST Bowel Injury Scale AAST Cardiac Injury Scale AAST Diaphragm Injury Scale AAST Hepatic Injury Scale AAST Kidney Injury Scale AAST Lung Injury Scale AAST Pancreatic Injury Scale AAST Rectal Injury Scale AAST Splenic Injury Scale AAST Vascular Injury Scale ABC Score (Massive Transfusion)ACS COT Field Triage Guidelines ATLS Hemorrhagic Shock Classification Abbreviated Injury Scale (AIS)Ankle-Brachial Index (ABI) in Trauma Base Deficit in Trauma Brain Injury Guidelines (BIG) Score Cardiac Wound Index Chest Trauma Score (CTS)Damage Control Decision Score (DCDS)Denver Criteria (BCVI)Esophageal Perforation Severity Score (PSS)Expanded Denver Criteria (BCVI)Flint Colon Injury Scale Frailty Index in Trauma (mFI-5)Geriatric Trauma Outcome Score (GTOS)Hard Signs of Vascular Injury Checklist Hemorrhage Control Decision Aid (Wound Packing vs. Tourniquet)ICP-based Cerebral Perfusion Pressure (CPP) Calculator Injury Severity Score (ISS)Injury Severity Score — Age-adjusted (ISS-Age)Lethal Triad / Trauma Triad of Death Calculator Limb Salvage Index (LSI)Mangled Extremity Severity Score (MESS)Mechanism, Glasgow Coma Scale, Age, and Arterial Pressure (MGAP)Memphis Criteria (BCVI)Modified Shock Index (MSI)Nerve Injury, Ischemia, Soft-tissue, Skeletal Injury, Shock, Age (NISSSA)New Injury Severity Score (NISS)Open Abdomen Classification (Björck)Pediatric Trauma Score (PTS)Pelvic Trauma Hemorrhage Risk Score Penetrating Abdominal Trauma Index (PATI)Physiologic Extreme Emergency in Trauma (FEET)Predictive Salvage Index (PSI)REBOA Zone Selection Guide Resuscitative Thoracotomy Indications (EAST/WTA Guidelines)Revised Trauma Score (RTS)RibScore Shock Index (SI)TASH Score TRISS Index Thoracic Trauma Severity Score (TTS)Tile Classification of Pelvic Fractures Trauma and Injury Severity Score — Pediatric (PTS)Young–Burgess Pelvic Fracture Classification

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Limb Salvage Index (LSI)

Mangled Extremity Evaluation

Arterial Injury

Nerve Injury

Bone Fx

Muscle Crush

Skin Loss

Ischemia Time

Assign Findings

Select the anatomical and physiologic findings to determine the salvage probability.

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

When to Use LSI

High-energy extremity trauma (motor vehicle collisions, crush injuries)

Mangling injuries with suspected vascular compromise

Penetrating trauma with multi-structural limb damage

Blast injuries affecting upper or lower extremities

Open fractures with soft tissue loss

Traumatic limb ischemia requiring surgical decision-making

Clinical Purpose

Objective	Clinical Impact
Predict limb viability	Estimate salvage potential
Guide amputation decisions	Early vs delayed amputation strategy
Standardize trauma assessment	Reduces subjective variation
Support multidisciplinary planning	Orthopedics + vascular + plastics

Limitations

Not a replacement for clinical judgment

Less reliable in pediatric trauma (different healing capacity)

Does not directly incorporate physiologic shock severity

May underestimate infection risk in delayed presentations

Requires detailed operative or imaging assessment

Key Principle

Limb salvage decisions must balance functional outcome, infection risk, ischemia time, and patient physiologic stability—not score alone.

Last Comprehensive Review: 2026

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