Washington Redskins quarterback Robert Griffin III will travel to Florida on Tuesday to see renowned orthopedist James Andrews for more examinations on his right knee.
"There is a concern," coach Mike Shanahan said Monday. "That's why he's going to see him."
Griffin tore his anterior cruciate ligament while playing for Baylor in 2009, and Shanahan said that injury caused Griffin's latest MRI exam to prove inconclusive and produce "differences of opinion" in those who have looked at it.
"They want to take another look and have a physical exam with him," Shanahan said, "to make sure they're not looking at old injuries."
A torn ACL typically requires a rehabilitation period of nine to 12 months, although some players don't return to full health until their second season after the injury.
Shanahan was grilled about his handling of Griffin's injury. Already playing with a heavy black brace in his third game since spraining a lateral collateral ligament, Griffin hurt the knee again when he fell awkwardly while throwing a pass in the first quarter of Sunday's 24-14 playoff loss to the Seahawks.
Griffin stayed in the game, but he was far from his usual self, clearly favoring the knee and unable to run with his world-class speed.
Shanahan said he thought he made the "right decisions" to keep Griffin in the game and that it would be "crazy" to think he would purposely sacrifice Griffin's career to win a game. He said he did not talk to team doctors initially after Griffin was hurt in the first quarter, instead relying on Griffin's word.
"I went up to Robert. I said, 'You OK?' " Shanahan said. "And he said, 'I'm fine.' "
Seahawks: Pass-rushing defensive end Chris Clemons has been knocked out of the postseason because of a torn anterior cruciate ligament and a torn meniscus in his left knee.
Clemons was hurt Sunday when it appeared his cleats got stuck in the messy, dirty turf at the Redskins' FedEx Field early in the third quarter of Seattle's victory.
"It's a big loss for us in a lot of ways," said coach Pete Carroll, whose Seahawks travel to Atlanta on Sunday. "Chris has been a great football player and just a symbol of consistency in the years that we've had him, but he's been a great leader for us, too."
Clemons has been the most consistent pass rusher for the Seahawks since arriving in a trade from Philadelphia before the 2010 season. He had 111/2 sacks this season.
Bruce Irvin, who set a franchise rookie record with eight sacks, will start against the Falcons.
Bills: Buffalo filled its head-coaching vacancy, hiring Doug Marrone, who spent the past three seasons at Syracuse.
Jets: Matt Cavanaugh will not return as quarterbacks coach after four seasons with the team. Cavanaugh was responsible for the development of Mark Sanchez, who took a step back in his fourth season and was benched late in the year.