The Broncos have lost linebacker Danny Trevathan for the season with a dislocated left kneecap that will require surgery, according to an NFL source.
Trevathan suffered the injury in the second half of Sunday’s 22-10 victory at San Diego.
Trevathan had sustained two separate fractures in the left knee area that forced him to miss 11 of the Broncos’ first 13 games.
Meanwhile, Brandon Marshall, the Broncos’ leading tackler this season, suffered a sprain in the Lisfranc area of his right foot during the second quarter against the Chargers. Marshall said he would be out a week or two.
“It’s not as bad as you might think,” Marshall said Monday. “It’s been the year of the linebacker injury.”
Earlier this season, the Broncos lost starting middle linebacker Nate Irving to a season-ending knee injury.
With Marshall and Trevathan now down, the Broncos are expected to turn to rookies Lamin Barrow, Todd Davis and Corey Nelson.
Mike Klis: mklis@denverpost.com or at twitter.com/mikeklis
