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FUNCTION LEVEL
K1Has the ability or potential to use a prosthesis for transfers or ambulation on level surfaces at a fixed cadence. Typical of the limited and unlimited household ambulator.
K2
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
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
Has the ability or potential for prosthetic ambulation that exceeds basic ambulation skills, exhibiting high impact, stress, or energy levels. Typical of the prosthetic demands of the child, active adult, or athlete.
IMPACT LEVEL
LOWDaily walking and occasional non-jumping sports such as golf, hiking and racquet games.
MODERATE
Heavy heel walking, frequent or daily sports such as jogging and aerobics.
HIGH
Daily sports such as distance running, climbing, aerobics, and lifting and carrying heavy objects for vocational purposes.
EXTREME
Rigorous daily walking at high cadence, competitive athlete in track and field type events, has vocation that requires excessive jumping or loading of the prosthesis.
