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A Biomechanical Evaluation of the Ossur Power Knee in Persons With Transfemoral Amputation

RecruitingNAAges 45 Years - 75 YearsAllVA Office of Research and Development
NCT06218238 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

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.

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📋 Eligibility rules (as published)
Inclusion Criteria: * Unilateral, transfemoral amputation (any etiology) * Residual limb length classified as standard (i.e., medium) to long * Prosthesis user for at least 1 year prior to enrolling in the study * K3 or K4 level ambulator * Good sensation on their residual limb(s) (upon routine clinical examination) * Good skin integrity upon visual inspection * Does not require the use of assistive devices to walk for short distances * Not currently taking medications that are known to affect balance or gait * Presents with good socket fit based upon a standard assessment by the study prosthetist Exclusion Criteria: * Bilateral amputations * Individuals with a knee disarticulation
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What it tests

  • Powered prosthetic knee joint
  • Conventional microprocessor-controlled prosthetic knee joint
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Where

1 site
Jesse Brown VA Medical Center, Chicago, IL
Chicago, United States
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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