Table 1 Functional scales
Tarlov score | Description |
 0 | No movement |
 1 | Barely perceptible movement, non–weight bearing |
 2 | Frequent movement, non–weight bearing |
 3 | Supports weight, partial weight bearing |
 4 | Walks with mild deficit |
 5 | Normal but slow walking |
 6 | Full and fast walking |
Ischemia score | Description |
 0 | Autoamputation > half lower limb |
 1 | Gangrenous tissue > half foot |
 2 | Gangrenous tissue < half foot, with lower limb muscle necrosis |
 3 | Gangrenous tissue < half foot, without lower limb muscle necrosis |
 4 | Pale foot or gait abnormalities |
 5 | Normal |
Modified ischemia score | Description |
 0 | Autoamputation of leg |
 1 | Leg necrosis |
 2 | Foot necrosis |
 3 | Discoloration of 2 toes |
 4 | Discoloration of 1 toe |
 5 | Discoloration of >  2 nails |
 6 | Discoloration of 1 nail |
 7 | No necrosis |
The grade of limb necrosis | Description |
 0 | Normal limb without swelling, necrosis or atrophy of muscle |
 1 | Necrosis limiting to toes (toes loss) |
 2 | Necrosis extending to a dorsum pedis (foot loss) |
 3 | Necrosis extending to a crus (knee loss) |
 4 | Necrosis extending to a thigh (total hind-limb loss) |
Function score | Description |
 0 | Dragging |
 1 | No plantar flexion |
 2 | No toe flexion |
 3 | No grabbing force |
 4 | Some grabbing force |
 5 | Normal |