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A Biomechanical Evaluation of the Ossur Power Knee in Persons With Transfemoral Amputation
Sponsor: VA Office of Research and Development
Summary
Microprocessor-controlled knees (MPKs) do not typically utilize motors to power joint rotation, but they automatically adjust resistance or damping in the joint to improve swing- and/or stance-phase control as appropriate for the prosthesis user during gait. The Ossur Power Knee is the only commercially-available MPK that uses a motor to provide active power generation during walking and other activities. The purpose of this proposed investigation is to perform and compare biomechanical evaluations of the Power Knee and Ossur Rheo XC, a passive MPK, during walking and other activities by prosthesis users. Furthermore, mobility between male and female subjects will be compared to determine if there are differences in prosthetic knee usage on the basis of sex.
Official title: Do Transfemoral Prostheses With Powered Prosthetic Knee Flexion and Extension Improve Mobility? A Biomechanical Evaluation of the Ossur Power Knee
Key Details
Gender
All
Age Range
45 Years - 75 Years
Study Type
INTERVENTIONAL
Enrollment
20
Start Date
2024-04-01
Completion Date
2027-03-31
Last Updated
2025-09-09
Healthy Volunteers
No
Interventions
Powered prosthetic knee joint
Subjects will be fitted and trained on the Ossur Power Knee. An accommodation of 1 month will be provided prior to evaluation with the knee joint.
Conventional prosthetic knee joint
Subjects will be fitted and trained on the Ossur Rheo XC Knee. An accommodation of 1 month will be provided prior to evaluation with the knee joint.
Locations (1)
Jesse Brown VA Medical Center, Chicago, IL
Chicago, Illinois, United States