Posterolateral corner lesions have been estimated to occur in 9.1% of acute knee injuries with haemarthrosis and 16% of all knee ligament injuries, often presenting with concomitant anterior crutiate ligament or posterior crutiate ligament or both, isolated PLC has shown to account for less than 30% of the injuries, failure to detect these injuries has been shown to be an important cause of recurrent instability and failed cruciate ligament reconstructions