Vince Young underwent surgery to repair the torn tendon in his right thumb on Monday.
Young was placed on injured reserve by the Titans last week after injuring the thumb against the Washington Redskins.
He had wanted to go back into the game, and got into a verbal altercation with coach Jeff Fisher in the locker room, costing him his starting quarterback job - regardless of the injury.
Young was to have a pin inserted into the thumb and the injury will be immobilized.
“It was told to us that it was season-ending, so I'm assuming that it was five to eight weeks, something like that,” Fisher said. “The thumb will be immobilized. That's the nature of the surgery, just to immobilize the thumb, so the they can re-attach the tendons. We were told somewhere in the five-to-eight week range.”