Bad news, Rob Gronkowski out for season after re-breaking arm

Rob Gronkowski missed five weeks earlier this season after breaking his forearm blocking an extra point against the Colts. He finally returned in Week 17 to limited action.

In the first quarter of today's game, Gronkowski landed on that same arm (which has heavily wrapped) hauling in a deep pass from Tom Brady that landed out of bounds. He never returned and the news isn't good.
Boston Herald:

Tight end Rob Gronkowski has broken his left forearm again, and he'll need season-ending surgery, according to a source.

Pretty terrible news to come out on Gronkowski. Granted the Patriots have handled the Houston Texans this far, they also only lost one game without Rob Gronkowski. Still, he is a key cog in the Patriots offense and his absence could be a huge factor in the coming games should the Patriots hold on against the Texans.