Northern Arizona University
The goal of this clinical trial is to learn if a motorized prosthesis can improve mobility in individuals with amputation. The main question it aims to answer is: * Does motorized prosthesis improve ambulation speed, balance, control, or efficiency when performing everyday activities? * What problems arise when using a motorized prosthesis? Researchers will compare mobility of the participants when using and not using the motorized prosthesis to see if mobility and/or function improves. Participants will perform various activities with and without the motorized prosthesis including: * Walking at a mild incline/decline (0°-15°) on treadmill or over-ground * Ascending or descending stairs * Stand to sit and sit to stand transitions * All terrain walking over ground * Turning * Any combination of the above-mentioned activities
Participants will perform ambulation activities (see list below) while using their prescribed prosthesis or the motorized prosthesis in conjunction with their prescribed passive prosthesis. Each ambulation activity will be tested in four different conditions: 1. Ambulation with their personal (take home) device. This condition acts as a baseline to which the ambulation with the motorized prosthesis can be compared. 2. Ambulation with the motorized prosthesis in the "off" configuration (i.e., no power is applied to the motor). This condition demonstrates the impact of the device when it is unp…
Inclusion Criteria: * Individuals age 18 to 85 with or without lower-limb amputation * Able to understand and follow simple directions in English based on ability to provide verbal consent * Able to walk at least 30 feet with or without a walking aid * Able to safely fit into a device configuration and tolerate assistance * Individuals with lower-limb amputation must receive physician approval to participate in the study. Exclusion Criteria: * Any neurological, musculoskeletal (other than lower-limb amputation) or cardiorespiratory injury, health condition (including pregnancy), or diagnosi…
The participant will perform the study protocol with their "take home" prosthesis and/or another suitable passive prosthesis.
The motorized prosthesis is an experimental device. The device is constructed from plastic and metal. It has motors, sensors, and electronic systems to control the prosthesis to mimic the behavior of a biological joint. The device is determined non-significant risk by the sponsor's Institutional Review Board.
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