7 Jun, 15:39
ERC can confirm that the Federation Française de Rugby (FFR) has withdrawn its application to host the 2014 Heineken Cup and Amlin Challenge Cup finals, due to the ongoing uncertainty regarding the availability of the Stade de France.
McKenzie had managed to play through the pain barrier for the Dragons during their opening league fixtures, however he is now unlikely to feature for the South Wales side until the new year.
"I picked it up in pre-season and was advised to have the operation," said McKenzie.
"There is not a lot I can do about it, but I hope to be back around Christmas time or soon after."
The Dragons travel to Glasgow to face the Warriors in their opening game on Friday, October 8 before welcoming European Champions Toulouse to Rodney Parade the following weekend.