A prosthetic leg is an artificial device designed to replace a missing leg or part of a leg. It helps individuals who have lost a limb due to injury, illness, or congenital conditions regain mobility and improve their quality of life. Prosthetic legs can be customized to fit the user's body and needs, often incorporating advanced materials and technology for better performance. These devices typically consist of a socket that fits over the residual limb, a pylon that acts as the leg's structure, and a foot component that provides stability and movement. Modern prosthetic legs may also include features like adjustable joints and sensors to enhance functionality and comfort for the user.