The All Blacks have probably lost both starting props for the year.
Loosehead Joe Moody trudged off Yarrow Stadium with a suspected dislocated shoulder and went straight to hospital after the All Blacks' scrappy 39-22 victory over the Pumas.
"He's off to get an X-ray and it looks like he'll probably have to have an operation," All Blacks coach Steve Hansen said. "It'll be the end of him for the year I'd say."
The loss of Moody comes hot on the heels of tighthead Owen Franks also going under the knife to fix his Achilles issues. He, too, is not expected back this season.
Nepo Laulala has been promoted in Franks' absence and Moody's Crusaders team-mate Wyatt Crockett will now be expected to come in to face the Springboks in Albany next week.