Terrible news for Theis and the Celtics. Theis had established himself this season in his rookie campaign as a solid rotation big man in today's game. He was fitting in better and better as the season went along. Hopefully he can return by training camp at 100%.
Greg Monroe will have to step up in Theis' absence. While neither an ideal defender nor a floor spacer which are both needed in today's game, Monroe can add a solid post game and rebounding to the mix. It will be up to Brad Stevens to figure out a way to use Monroe's post game to an advantage without stymieing the offense.