Patriots tight end Rob Gronkowski needs surgery on his broken left arm, a person with knowledge of the injury told The Associated Press.
Gronkowski was injured on the Patriots' eighth offensive play of Sunday's 41-28 victory over Houston. He previously missed five regular-season games and is done for these playoffs.
The person spoke on condition of anonymity because the team has not released details of the injury.
''I'm not sure,'' coach Bill Belichick said after the game when asked if Gronkowski had broken his arm.
Asked if Gronkowski had been taken to a hospital, Belichick said, ''Look, I just walked off the field.''
38, Broncos 35 (2OT)
49ers 45, Packers 31
Falcons 30, Seahawks 28
Patriots 41, Texans 28
The Patriots also lost running back Danny Woodhead for the game when he hurt his thumb carrying the ball on their first offensive play. The club provided no update on his condition.
Rookie defensive end Chandler Jones hurt his ankle later in the game.
The Patriots will be home against the Baltimore Ravens in the AFC championship game next Sunday with the winner advancing to the Super Bowl two weeks later.
Gronkowski had broken his left forearm while blocking for an extra point near the end of New England's 59-24 victory over the Indianapolis Colts on Nov. 18 and underwent surgery. He missed five games and returned for the regular-season finale, a 28-0 win over the Miami Dolphins.
He was reinjured just 6:44 into Sunday's game on a deep pass down the right sideline from Tom Brady. Gronkowski fell out of bounds as the pass dropped incomplete.
He sat on the bench, writhing in pain, while talking to team doctor Thomas Gill before heading to the locker room.
Brady provided no information on the condition of one of his most important teammates.
''I don't know anything about that,'' Brady said. ''I haven't heard anything.''
Gronkowski's teammates said that the team would miss him but that other players have to contribute.
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''It's a big loss and you can't replace a player like him.''
Last season, Gronkowski's status was listed as questionable for the Super Bowl just 48 hours before the New York Giants 21-17 victory. He had suffered a high sprain to his left ankle two weeks earlier in the Patriots' 23-20 win over the Ravens in the AFC championship game. That hampered him in the Super Bowl in which he had just two catches for 26 yards after a season in which he had 105 receptions, 15 of them in the other two postseason games.
After the season, he had arthroscopic surgery on the ankle.
On Sunday, backup tight end Michael Hoomanawanui got more action once Gronkowski left.
''I just saw him a little bit ago,'' Hoomanawanui said. ''A guy with that much talent, it stinks. There's no other way to put it. I went down with a knee injury last year that ended my season and you never want to see that for anyone, for an opponent, but let alone a guy that you spend a lot of time with each and every day.''
Asked if Gronkowski would miss the rest of the postseason, Hoomanawanui said, ''I haven't heard yet. He looks like he was hurting. I'm sure we'll find out here soon enough.''