All Blacks lock Sam Whitelock will be called on to any provide loose forward cover for the early stages of New Zealand's Rugby World Cup 2011 campaign.
Kieran Read and Adam Thomson will miss the start of the tournament as they recover from injuries.
Read suffered a high ankle sprain and Thomson damaged the inside of his elbow and team doctor Deb Robinson said today both will miss the tournament's opening match against Tonga on September 9.
"Kieran has torn the ligament between the tibia and fibula at the front of his left ankle and while it's still early days in his recovery, with aggressive rehabilitation we are aiming to have him available to play near the end of the round robin.
"Adam's MRI scan shows some swelling around the inside of his elbow which should settle quickly. He also has some deep bruising to his upper arm and while it's difficult to know how long that will take to settle, we are hoping he will be ready for selection for the All Blacks' second round robin match against Japan,'' said Robinson.