(Leah Hogsten | The Salt Lake Tribune) University of Utah bionic engineering student Marissa Cowan measures the torque and force of the instrumented pyramid of the Utah Bionic Leg, Oct. 4, 2022. The Utah Bionic Leg weighs about 6 pounds and uses motorsm processors and advanced artificial intelligence that assists users in walking, standing up, sitting down and ascending and descending stairs and ramps.