Lightweight Motorized Prostheses for Lower-limb Amputees
University of Utah
Summary
The investigators will assess biomechanical and functional mobility outcomes in individuals with unilateral, above-knee amputations using different knee/ankle configurations of a lightweight powered prosthesis and different volitional controllers in individuals with unilateral, above-knee amputations.
Description
AIM1: For all studies, participants will repeat the same experimental protocol with their passive prostheses and our lightweight powered knee combined with powered, semi-active, and passive ankle. The investigators will also administer a questionnaire based on a 5-point Likert scale to rate intuitiveness, safety, physical demand, and mental demand for each tested condition. Participants will have time to familiarize themselves with the protocol and the prosthesis in a separate training session. Part 1: Level and Inclined Walking Effort. The study will assess walking effort as participants wa…
Eligibility
- Age range
- 18–80 years
- Sex
- All
- Healthy volunteers
- Yes
Our inclusion criteria will be * Above-knee amputation * K2/K3/K4 ambulators * At least 18 years old * At least one year since amputation * At least six months since the definitive prosthesis fitting * Currently prescribed and using a mechanically passive or microprocessor-controlled prosthesis Our exclusion criteria will be * Over 350 lbs. body weight, the weight limit for our safety suspension systems * Cognitive deficits or visual impairment that could impair their ability to give informed consent or to follow simple instructions during the experiments * Pregnant women due to elevated sa…
Interventions
- DevicePowered and passive lower limb prosthesis and control
Effect of prosthesis function on mobility and ambulation
Location
- University of UtahSalt Lake City, Utah