Arsona Plaster of Paris (POP) bandage is a medical dressing used for making orthopedic casts and immobilizing broken bones or injured limbs. It consists of gauze impregnated with Plaster of Paris, which hardens when wet, providing firm support. POP bandages are commonly used in fracture management, orthopedic corrections, and surgical molds. They set quickly and conform well to the body’s shape for effective immobilization.