Today, prosthetics are a world apart from these pre-digital age examples, using advanced robotic and cybernetic technologies and tools such as 3-d printers for mass customization. As such vintage prosthetics often have the particularly strange look which is both creepy and fascinating and accompanies technological obsolescence.Early prosthetic limbs date from ancient Egypt and Rome, however examples from the middle ages appear more regularly, being made of armor. The were later replaced by non articulated wooden prosthetics, of the caricature style normally worn by pirates. The tragically large number of amputees in the Napoleonic Wars led to the development of the 'Clapper', named after the sound made by its articulated toes which were controlled by artificial tendons. This prosthetic became the model for the 'American Leg' which was developed during the American Civil war. Wooden prosthetics were heavy and were not improved on till the development of lightweight alloys, during the first World War.