An MRI revealed Kobe Bryant has a fracture of the lateral tibial plateau in his left knee, as first reported by Serena Winters.
The team later confirmed the injury. He is expected to miss 6 weeks.
Bryant suffered a minor left knee injury in the team's 96-92 victory over the Grizzlies on Tuesday, but he indicated after the game he did not anticipate missing any time.
Bryant recently returned from a torn Achilles suffered late last season.