No 8 Read is set to miss the opening weeks of the rugby World Cup while Thomson looks set to be unavailable for the opening match against Tonga after both players underwent MRI scans in Christchurch yesterday.
Read suffered a high ankle sprain and Thomson damaged the inside of his elbow in the All Blacks' 25-20 defeat by Australia in Brisbane on Saturday night.
"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."
Read and Thomson will stay in the squad as they undergo their rehabilitation.
The All Blacks squad assembles in Auckland on Friday to prepare for the opening match of rugby World Cup against Tonga.
