Table 1.

The Special Interest Group in Amputee Medicine (SIGAM) scale for grading mobility in a patient with a lower-limb amputation

Grade	Clinical finding
A	Does not wear a limb prosthesis or Only wears a limb prosthesis for cosmetic purposes
B	Only wears a limb prosthesis for transfers or to assist nursing or only walks indoors or needs assistance from someone else
C	Only walks on level ground ≤ 50 m with or without the use of a walking aid
D	Walks on level ground outdoors in good weather ≥ 50 m with or without the use of a walking aid
E	Walks > 50 m independent of walking aid (may use walking aid to improve confidence or in inclement weather or for difficult terrain)
F	Normal or near normal gait

Grades C and D can be subgraded based on the walking aids: a) frame; b) 2 crutches or sticks; c) 1 crutch or stick; d) none.