Vanden Bosch missed the Lions' first two preseason games with a knee injury. He sat out team drills Monday in an effort to bring him back slowly, but did take part in position drills. He was seen with ice on his knees.
Vanden Bosch started all 16 games last season and had 8 sacks.
It's not the only injury the Lions are working through. Missing practice Monday were wide receiver Titus Young, kick returner Stefan Logan (ankle), linebacker Travis Lewis (quad), safety Don Carey (hamstring) and defensive linemen Corey Williams and Sammie Hill.
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