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 independence. Prosthetic legs are custom-made to fit the user's body and can vary in complexity, from basic models to advanced versions with electronic components. 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 support. Modern prosthetic legs may also include features like adjustable joints and sensors, enhancing the user's ability to walk and perform daily activities.