The girl, studying in class six, underwent the surgery in January last and was now able to walk, Rex Hospital Chief Surgeon and Director Dr Rex, told reporters today.
He claimed this was the first time in the country that the bilateral hip replacement was performed on a 12-year old girl.
The girl from nearby Tirupur was suffered from arthritis of multiple joints and remained crippled and bound to wheelchair.
A special miniature hip replacement implant to suit her size was imported and fixed without compromising future growth, he said.