Joe DiMeo, right, demonstrates the flexibility in his fingers for Dr. Eduardo Rodriguez, Monday, Jan. 25, 2021 at NYU Langone Health in New York. A surgical team, led by Rodriguez, amputated both of DiMeo’s hands, replacing them mid-forearm and connecting nerves, blood vessels and 21 tendons with hair-thin sutures. The scar on DiMeo’s forearm shows where the new hand was attached.