Testing the Caesar Foot Prosthesis at Home for Adults with Below-Knee Amputation Who Are Interested in Running

What this Trial Is About

Researchers are evaluating the impact of the bimodal Caesar Foot, a prosthetic device designed for both walking and running, in a real-world setting. This study focuses on users with transtibial limb absence who are interested in running but do not currently have a running blade. The purpose is to assess the feasibility and user experience of the Caesar Foot through performance and self-report measures over multiple conditions. The study follows a pilot longitudinal comparative effectiveness design with a sequence of baseline, experimental, and post-experimental periods. Participants will go through three main conditions first, wearing their usual prosthetic foot for one month as a baseline second, using the Caesar Foot at home for about two months, including a running training program led by physical therapists and third, returning to their usual foot for one month after the experimental period. The Caesar Foot has two modes optimized for walking and running, with alignment and stiffness adjustments. Training sessions will help participants learn to run safely and competently with the new foot. During the study, participants will attend five site visits and complete various self-report surveys and performance-based tests, including the Prosthetic Limb Users Survey of Mobility PLUS-M, walking and running speed tests, and activity monitoring with step counts and fall tracking. Periodic check-in calls will monitor participant progress and address concerns. Data collected will provide insights into mobility, fatigue, social participation, and prosthesis experience, helping improve future designs. The entire participation lasts about four months with at-home and clinic-based assessments.

Caesar Foot Take-Home Validation Testing