Transfemoral (above knee) amputation is a surgical procedure performed to remove the lower limb at or above the knee joint when that limb has been severely damaged via trauma, disease, or congenital defect. ... Poor circulation limits healing and immune responses to injury. Foot or leg ulcers may develop and not heal.
Prosthesis is an artificial limb that replaces a leg missing below the knee. A transtibial amputee is usually able to regain normal movement more readily than someone with a transfemoral amputation, due in large part to retaining the knee, which allows for easier movement. Lower extremity prosthetics describes artificially replaced limbs located at the hip level or lower.