The injury has been bothering Kreutz for some time, according to his agent Mark Bartelstein.
"Olin never wanted to complain and use it as an excuse" for what was a disastrous season for the offensive line, Bartelstein said.
The running game produced less than 1,500 yards rushing combined and gave up 35 sacks.
Dr. Porter said the injury definitely inhibited Kreutz' explosiveness and ability to push off.
After a 2-3 month rehabilitation Kreutz should be back to form, Bartelstein explained.
"I have no doubt he'll be back at a Pro Bowl level," he said.