This is a complete list of Hanger Prosthetics & Orthotics locations along with their geographical coordinates. According to the company’s history, it all started with a cannon ball during the opening days of the Civil War. James Edward Hanger had to have his leg amputated after the battle and he developed the world’s first articulated prosthetic leg. Today, over 150 years later, Hanger Prosthetics & Orthotics is one of the world’s leading designers and manufacturers of prosthetic limbs.