By Chris Emma–

CHICAGO (CBS) — It seemed the Bears would actually finish a game without losing a key player to injury, but bad news struck this struggling team again Sunday.

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Bears inside linebacker Danny Trevathan suffered an injury to his right knee that could end his season.

“It appears to be serious,” Bears coach John Fox said after his team’s 27-21 loss to the Titans at Soldier Field.

Trevathan went down late in the fourth quarter. Team medical personnel walked by his side and aided him as he limped off the field, favoring that right leg.

The Bears have 14 players presently on injured reserve. While cornerback Kyle Fuller will soon return from that list, another player could potentially be joining the mix.

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Trevathan is a key player to this Bears defense and one of the team’s key leaders. Teammates were disappointed by the news of another injury, especially to a teammate like Trevathan.

“It takes a hit to the locker room,” defensive end Akiem Hicks said. “You got to be able to absorb that hit. We have to get the next guy to step forward. I know that one touched me personally because that’s my guy, one of the guys I came in with as a free agent, built a great relationship with. I consider that (guy) a friend. A friend first, I feel for him.”

Last week, the Bears also lost tight end Zach Miller to a foot fracture, placing him on IR. Miller has successful surgery Saturday.

The Bears will update the status of Trevathan on Monday at Halas Hall, but it appears he could be the latest casualty to a season that has now reached 2-9.

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Chris Emma covers the Bears, Chicago’s sports scene and more for Follow him on Twitter @CEmma670 and like his Facebook page.