The team announced the news Monday, a day after Bowman left a game against Dallas with the injury.
Bowman suffered the non-contact injury in the third quarter Sunday against Dallas. He had to be helped off the field and was taken by cart to the locker room.
Bowman is one of the few remaining links to San Francisco’s success earlier this decade that featured three straight trips to the NFC title game and one Super Bowl appearance. Bowman blew out his left knee in the 2013 NFC championship game and missed the entire following season. He worked his way back last season and looked to be back in top form this year before the injury.
Copyright 2016 The Associated Press.