Limb Salvage or Early Amputation Burden of Injury (Non-Limb Specific Injury - Time 0 and Time 1) Burden of Injury (Non-Limb Specific Injury - Time 0 and Time 1) Burden of Injury (Limb Specific Injury - Time 1 and Beyond) Nerve Injury Vascular Injury/Limb Ischmia Amputation/Limb Salvage