An MRI has revealed that rookie quarterback Robert Griffin, III’s right knee has sustained partial tears of the anterior cruciate and lateral collateral ligaments.

Redskins Coach Mike Shanahan said Griffin is scheduled to be examined Tuesday in Pensacola, Fla., by orthopedic surgeon James Andrews to determine whether the test results show new or previous injuries.

It was not immediately clear whether surgery would be required or how long Griffin would be sidelined if the partial ligament tears are determined to be fresh injuries. Griffin suffered a torn ACL in the same knee in 2009 while he was in college at Baylor, and has been playing in recent weeks with a mild sprain of the LCL.