joker image from New Medical Terms
An instrument used in orthopaedic surgery to lift bone flaps, and elevate the periosteum (composite image, right)
Synonym Joker periosteal elevator
A popular term for any instrument a surgeon has grown accustomed to being handed during surgery or a procedure.
The term is named after the Joker in a deck of cards which, in many games, is a wild card that can be anything the holder of the card chooses it to be