Linebacker Patrick Willis reportedly underwent surgery to repair a fracture in his right hand, but should not miss any of the 49ers' regular season games.
Mike Sando reports that Willis, who has broken the same hand two prior times in his NFL career, had the surgery 'recently' and is expected to return in around three weeks, which would put him back on the field in time for San Francisco's opener against the Green Bay Packers on Sept. 8.
[MAIOCCO: Willis sustains 'slight fracture']
Willis, 28, sustained a broken right hand in 2007 and still managed to play all 16 games -- many of which he played with a cast on his hand. In 2010, Willis underwent two surgeries on a broken right hand. He sat out the final game of the season after the 49ers were eliminated from playoff contention.
Willis has earned trips to the Pro Bowl in each of his first six seasons in the NFL and recorded 100 tackles or more in five seasons.
49ers Insider Matt Maiocco contributed to this report