Flacco said, however, that he won't need to undergo offseason surgery to repair the damage to his knee.
"No, I'm not going to have to get anything done," Flacco said following the Ravens' season-ending 34-17 loss to the Cincinnati Bengals. "It was just my MCL, and it will heal on its own."
Flacco appeared to be in pain after being hit in the end zone, grabbing his knee and wincing afterward.
"Yeah, it just doesn't bend that well," Flacco said. "When the guy landed on me, he just bent it all up into the top of my chest. It didn't do any more [damage] to the knee. It just hurt for a while, that's all. It actually probably loosened it up for a couple series after that, once it kind of settled down for a bit. He basically just bent it up when he was on top of me and kept going."
Flacco remained in the game. During that end-zone hit, Flacco said it was his shoulder that was hurt, not his elbow.
Flacco was sacked twice and hit seven times. He finished the season with a career-high and franchise-record 22 interceptions, two more than Vinny Testaverde threw during the Ravens' inaugural season in 1996.
"I got landed on by one or two of their guys," said Flacco, who completed 30 of 50 passes for 192 yards, one touchdown and three interceptions for a 49.8 passer rating. "I wasn't able to get flat. I just landed straight on my arm and my shoulder and neck got all bent up, so it was more of my shoulder. My elbow felt fine. It was just my shoulder and not being able to get flat [on impact]"