Missouri quarterback James Franklin will undergo surgery to repair his injured throwing shoulder and will miss the rest of spring football activities, according to a release from the MU athletics department on Monday.

Franklin is not expected to miss any of the 2012 fall season.

The sophomore will undergo surgery Friday and the MU medical staff will develop a timetable for his return soon afterward.

Franklin injured the shoulder last Tuesday when a defender landed on his outstretched arm as he dove after a fumble late in a scrimmage. Initial diagnosis determined he wouldn’t need surgery, and offensive coordinator Dave Yost said Friday an MRI hadn’t revealed anything more serious than a sprain. The hope among the coaching staff was Franklin would return after spring break.

But according to the release, the MU medical team decided after further evaluation Franklin would require surgery to repair the injured shoulder, preventing further damage down the road.

“We’re disappointed for James, naturally,” coach Gary Pinkel said in a news release. “But this is absolutely the right thing to do, and we all know he’ll be in great hands, as we have the best doctors and trainers in the nation. James has an outstanding work ethic, and he’ll be able to get past this setback just fine.”

Redshirt freshman Corbin Berkstresser will slide into the No. 1 quarterback role for the remainder of the spring practices. Berkstresser was 10-of-25 for 105 yards during Saturday’s scrimmage, and has generally looked sharp throughout the spring. Franklin’s absence will allow Berkstresser (the likely backup come September) to develop some chemistry with the first-team receivers in case Franklin misses any regular season time.

Franklin threw for 2,865 yards and 21 touchdowns and ran for 981 yards and 15 touchdowns in 2011 as a first-year starter. Yost said Friday that Franklin wouldn’t fall behind the curve by watching from the sidelines.

“I don’t think it will set him back, I think it just kind of pauses his development,” Yost said. “You could see from the first practices, he was really on. He was lighting it up, locked in and getting comfortable again with the offense. What I hope this just does is be a little pause, and when he gets back we can kind of pick up right where he was at and continue that.”