Coach James Franklin confirmed the extent of the injury after the 27-10 loss -- the Owls' first win over PSU since 1941.
Wartman-White was injured in the second quarter after covering a punt, but walked off the field under his own power. After the trainers evaluated him on the sideline, he headed to the locker room and did not return.
The redshirt junior was seen as the Nittany Lions' best linebacker and as a player the Lions could ill afford to lose. His role inside is paramount to the success of defensive coordinator Bob Shoop, and there's not a lot of depth behind him.
Wartman-White finished second on the team in tackles last season with 75. He missed the 2012 season after suffering a knee injury on special teams in Week 2.