USC quarterback Matt Barkley had arthroscopic surgery on his right wrist Tuesday morning, the school said in a statement.
The school said the procedure was to relieve stiffness and clear up inflammation. Barkley is expected to be ready to participate in spring practice at the end of March.
"It's just a minor clean-up. He's going to be ready for spring practice,'' Barkley's longtime personal quarterback coach Steve Clarkson said. "But he needed to get the surgery. He'd hurt it early in the year, back around the Ohio State game, and he just played with it. It was affecting his ability to turn his thumb down and throw a spiral with any consistency.
Barkley, who threw for 2,734 yards and 15 touchdowns as a true freshman, missed one game because of a shoulder injury last fall. The school did not disclose an injury to the quarterback's wrist during the season.
Said Clarkson: "He's a tough kid. He didn't complain about it. He knew he could play through it, the ball just wasn't going to look as pretty as he wanted it to all the time. He didn't even tell me, but I could tell when he'd throw a pass every once in a while, like, 'What happened on that one?'''
Any delay for Barkley in spring drills could set the offense back heading into fall camp under new coach Lane Kiffin. Barkley and senior Mitch Mustain are the Trojans' only scholarship quarterbacks following the transfer of Aaron Corp to Richmond.
ESPNLosAngeles.com's Mark Saxon and Ramona Shelburne contributed to this report.