Posted by ESPN.com's Adam Rittenberg
It hasn't been the best news day for Penn State football, which just announced that backup running back Stephfon Green underwent right ankle surgery today and will miss spring practice.
Green's surgery was successful, but team doctor Wayne Sebastianelli said in a news release that rehabilitation will take 3-4 months. The redshirt freshman, who suffered a similar injury in high school, dislocated his ankle during the fourth quarter of Penn State's loss to USC in the Rose Bowl.
Green, the team's most explosive runner, had 578 rushing yards and four touchdowns to go along with 15 receptions and a touchdown.
On the bright side, Lions starting running back Evan Royster (knee) and starting right tackle Dennis Landolt (knee) will be able to participate in spring ball. Penn State really missed Royster in the Rose Bowl after the sophomore got hurt in the first half.