"It's not going to be season-ending, but he will miss some weeks," Cardinals head coach Ken Whisenhunt said.
Rhodes, who was acquired from the New York Jets for two draft picks in March 2010, had two tackles in Sunday's 34-10 loss to the Minnesota Vikings. He has 24 tackles and two sacks in the first five games this season, all starts
"We're going to further assess [his injury] today and we'll have a better idea afterwards," said Whisenhunt. "It's a shame. Kerry had been playing good football for us."