Person is >18 years old.
Person is a unilateral transfemoral or knee-disarticulation amputee with stabilized residual limb.
Person is a K2, K3 or K4 ambulator based on Medicare Functional Classification Level (MFCL).
Person is currently fitted with a prosthesis using a non-microprocessor controlled prosthetic knee for at least 6 months.
Person was never fitted with microprocessor controlled prosthetic knee joint.
Person is willing and able to independently provide informed consent.
Person is willing to comply with study procedures.
Person wears prosthesis daily and = 8 hours/day.
Person is walking on average 1km/day.
Person is walking not slower than 3km/h (~0.8m/s) (based on 10m walk test conducted during recruiting).
Person is walking on level ground in a step over step manner.

NCT02765035_inc_T1
Person
old
NCT02765035_inc_T2
Value
>18 years
NCT02765035_inc_T4
Measurement
Medicare Functional Classification Level
NCT02765035_inc_T5
Measurement
MFCL
NCT02765035_inc_T6
Value
K2, K3 or K4
NCT02765035_inc_T7
Device
prosthesis
NCT02765035_inc_T8
Device
prosthetic knee
NCT02765035_inc_T9
Qualifier
non-microprocessor controlled
NCT02765035_inc_T10
Temporal
at least 6 months
NCT02765035_inc_T11
Negation
never
NCT02765035_inc_T12
Device
prosthetic knee joint
NCT02765035_inc_T13
Qualifier
microprocessor controlled
NCT02765035_inc_T16
Device
prosthesis
NCT02765035_inc_T17
Multiplier
daily and = 8 hours/day
NCT02765035_inc_T18
Observation
walking
NCT02765035_inc_T19
Multiplier
1km/day
NCT02765035_inc_T20
Observation
walking
NCT02765035_inc_T21
Multiplier
not slower than 3km/h
NCT02765035_inc_T22
Observation
walking