The use of running-specific prostheses in athletes with bilateral transtibial amputations

Running-specific leg prostheses (RSPs) are made of carbon fiber, mimic the spring-like function of tendons, and allow elastic energy storage and return during level-ground steady-speed running; however, unlike biological legs, passive-elastic RSPs cannot generate mechanical power anew, vary stiffness, or allow ground clearance during leg swing. We have conducted a series of studies that assess the metabolic costs, biomechanics, and performance of athletes with bilateral TTAs who use RSPs for running and sprinting. We found that athletes with transtibial amputations (TTAs) using RSPs have similar metabolic economy [1], but different biomechanics across running speeds [2], impaired starting block acceleration [3] and slower curve-running performance [4] compared to non-amputees. These scientific research findings regarding the effects of using RSPs have implications for fairness in sport competition such as the Olympic Games.