Trevathan told Anderson that the doctor said his ACL and MCL are "fine."
The 2012 sixth-round pick out of Kentucky was carted off the field during training camp practice on Tuesday. He was injured during 11-on-11 drills and was helped off the field after not being able to put any weight on his knee.
More: All-Overrated Defenders
Trevathan started all 16 games for the Broncos last season, leading the team with 129 total tackles. He also had two sacks, three interceptions, three forced fumbles and 10 passes defended.
The Broncos were blown out in last year's Super Bowl loss to the Seattle Seahawks and made several moves in the offseason to try to improve their defense. Losing Trevathan sets them back a bit. Denver opens the season Sept. 7 at home against Andrew Luck and the Indianapolis Colts.
- Scooby Axson