Decker (knee) has been ruled out for Thursday night's game against the Packers, Ryan Wood of USA Today reports.
Decker (knee) did not practice Monday, Tim Twentyman of the Lions' official site reports.
Decker (knee) was a non-participant in Tuesday's walkthrough.
Decker (shoulder) has been ruled out for Sunday's game against Houston.
Decker (chest) didn't practice Wednesday, Colton Pouncy of The Athletic reports.
The Lions signed Decker to a three-year, $60 million contract extension Monday, Adam Schefter of ESPN reports.
Decker said Tuesday he underwent foot/ankle surgery this offseason and resumed working out mid-February, Justin Rogers of The Detroit News reports.
Decker (ankle) is active and will start Thursday night's Week 4 game against the Packers.
Decker (ankle) is inactive Sunday against the Falcons.
Decker (foot) was a full participant during minicamp, Nick Baumgardner of the Athletic reports.