Comparing Active and Passive Ankle-foot Prostheses
The purpose of this study is to perform clinical testing of the PowerFoot in a group of individuals with trans-tibial amputation with the objective of optimizing its performance and comparing it with a current state-of-art passive-elastic ankle-foot prosthesis, i.e. the Ceterus Flex-Foot.
|Study Design:||Observational Model: Case-Only
Time Perspective: Cross-Sectional
|Official Title:||Comparing Active and Passive Ankle-foot Prostheses|
- Gait kinematics [ Time Frame: 1 day ] [ Designated as safety issue: No ]Kinematic gait parameters for level, ramp and stair ambulation
- Energy consumption [ Time Frame: 1 day ] [ Designated as safety issue: No ]Metabolic consumption change between rest and walking conditions
- Gait kinetics [ Time Frame: 1 day ] [ Designated as safety issue: No ]Kinetic gait parameters at different joint levels for level, ramp and stair ambulation
|Study Start Date:||June 2010|
|Study Completion Date:||June 2011|
|Primary Completion Date:||June 2011 (Final data collection date for primary outcome measure)|
Adults with history of traumatic unilateral transtibial amputation
The investigators will measure performance during level ground walking and in simulated uneven terrain. The investigators will also compare the metabolic cost and self-selected gait speed with the PowerFoot versus the traditional Ceterus Flex-Foot.
Tasks will include:
- Perform biomechanical analysis (kinematic and kinetic gait parameters) of the PowerFoot and the Ceterus in a group of individuals with trans-tibial amputation during level walking, ramp ambulation, and stair ambulation.
- Compare in the laboratory and in the field the performance of the PowerFoot with the Ceterus.