score level D on the SIGAM mobility grade 
have experienced 1 or more falls in the last month before the study 
have a residual limb length which does not allow for seven inches clearance of bracket attachment for the PowerFoot 
the residual limb must be stable in volume (no change in socket or socket padding in last 6 months) and without pain that limits function 
the sound-side (contralateral) lower extremity must be free of impediments that affect gait, range of motion, or limb muscle activity 
Any diagnosed cardiovascular, pulmonary, neurological, and/ or orthopedic conditions that would interfere with subject participation       
    

NCT01684501_exc_T1
Measurement
SIGAM mobility grade
NCT01684501_exc_T2
Value
level D
NCT01684501_exc_T3
Multiplier
1 or more
NCT01684501_exc_T4
Observation
falls
NCT01684501_exc_T5
Temporal
in the last month before the study
NCT01684501_exc_T6
Reference_point
last month before the study
NCT01684501_exc_T7
Measurement
residual limb length
NCT01684501_exc_T8
Value
does not allow for seven inches clearance of bracket attachment
NCT01684501_exc_T9
Negation
does not
NCT01684501_exc_T11
Condition
impediments that affect gait
NCT01684501_exc_T12
Condition
impediments that affect range of motion
NCT01684501_exc_T13
Condition
impediments that affect limb muscle activity
NCT01684501_exc_T14
Observation
lower extremity
NCT01684501_exc_T15
Scope
impediments that affect gait, range of motion, or limb muscle activity
NCT01684501_exc_T16
Negation
free
NCT01684501_exc_T17
Condition
cardiovascular conditions
NCT01684501_exc_T18
Condition
pulmonary conditions
NCT01684501_exc_T19
Condition
neurological conditions
NCT01684501_exc_T20
Condition
orthopedic conditions
NCT01684501_exc_T21
Scope
cardiovascular, pulmonary, neurological, and/ or orthopedic conditions
NCT01684501_exc_T22
Qualifier
interfere with subject participation