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 (ankle) is listed as doubtful going into Sunday's game against Seattle.
Decker (foot) was a full participant during minicamp, Nick Baumgardner of the Athletic reports.
Decker (foot) is not participating in OTAs while he deals with "residual effects from rehabbing all offseason," but he would be able to play right now if needed, Benjamin Raven of MLive.com
Decker (foot) was injured in the Lions' win over the Packers on Sunday.