The first joint replacement surgeries were performed 135 years ago in Germany, shortly followed by efforts in France and England using rubber and steel joints. Refinements in materials and methods progressed slowly, but by 1969 the FDA finally approved the first hip prosthesis, the technical name for the artificial joint. In 2025, it is projected that 2.5 million Americans will undergo hip and knee replacement surgeries with countless more undergoing replacement surgeries of other joints.