Eli's Rehab Report

Following are the complete descriptions of the functional classification system modifiers:

-K0 Lower-extremity prosthesis functional level 0 does not have the ability or potential to ambulate or transfer safely with or without assistance and a prosthesis does not enhance their quality of life or mobility

-K1 Lower-extremity prosthesis functional level 1 has the ability or potential to use a prosthesis for transfers or ambulation on level surfaces at fixed cadence. Typical of the limited and unlimited household ambulator

-K2 Lower-extremity prosthesis functional level 2 has the ability or potential for ambulation with the ability to traverse low-level environmental barriers such as curbs, stairs or uneven surfaces. Typical of the limited community ambulator

-K3 Lower-extremity prosthesis functional level 3 has the ability or potential for ambulation with variable cadence. Typical of the community ambulator who has the ability to traverse most environmental barriers and may have vocational, therapeutic, or exercise activity that demands prosthetic utilization beyond simple locomotion

-K4 Lower-extremity prosthesis functional level 4 has the ability or potential for prosthetic ambulation that exceeds the basic ambulation skills, exhibiting high impact, stress, or energy levels, typical of the prosthetic demands of the child, active adult, or athlete.