The purpose of this descriptive and exploratory pilot study is to investigate: (1) sagittal
plane hip kinematics and kinetics and (2) metabolic consumption/cost, for bilateral
transfemoral walking with passive prostheses versus powered prostheses. The pilot study will
collect data from three subjects with bilateral transfemoral amputations. Differences in
kinetics, kinematics, and oxygen consumption/cost when comparing passive and powered
components may indicate benefits for clinical application of powered devices for persons
with lower limb amputation.
- Male or female
- All causes of limb amputation: congenital, trauma, vascular, limb salvage, infection.
- All transfemoral residual limb lengths: joint disarticulation, long, medium, short,
- Subjects currently walk with entirely passive type prostheses daily.
- Subjects walk without assistive devices OR with single point cane.
- High-activity level walkers
- Ages < 18 or > 45 years
- Medical comorbidities or existing conditions that may impede the subjects ability to
complete the protocol excluding the amputations.
- Current medications or pharmaceutical interventions that may impede the subjects
ability to complete the protocol.
- Any powered prosthetic component or prosthesis, including but not exclusive to: Ossur
Proprio Foot, BiOM or BiOM T2 System Foot, Ossur Power Knee, Ossur Symbionic Leg.
- Subjects requiring a walker, crutches, quad cane, or other assistive devices
excluding a single point cane.
- Low-activity level walkers