Abstract
The pivotal role of plaster of Paris (POP) cast as an immobilization tool to promote healing in complex and/or other types of fractures is irrefutable. We clearly know that Antonius Mathysen extensively applied plaster cast during Crimea and/or other wars and reportedly saved thousands of lives. However, the exact origin of using POP in orthopedic cast is yet to be clear. In his famous report from Bandar-e Rig, a city in Iran, William Eton paved the way for the conclusion that POP cast might have originated from the Persian Empire. In this paper, we provide more supporting evidences which make the aforementioned claim more probable.