Stafford, however, said during a Tuesday appearance on the Mitch Albom Show that he's physically fine as the team prepares for Week 2.
"I'm doing OK," Stafford said, via Dave Birkett of the Detroit Free Press. "I'm feeling healthy and good to go."
Stafford called the play where Decker kicked him "a complete accident" and considered himself fortunate to avoid a major injury.
"I was just locked out on my left leg and my knee just kind of, leg just kind of hyper-extended just a little bit," Stafford said. "Probably scared me more than anything. That's a common way people (get) really hurt, so I was lucky to get out of there with not too much (damage)."
Stafford completed 27 of 46 passes for 268 yards and a touchdown, but also tossed four interceptions, which included a pick-six, and posted a dismal 47.9 passer rating before giving way to backup Matt Cassel in a 48-17 loss.
But a healthy Stafford heading into game preparations ensures the quarterback won't have to dedicate time dealing with medical treatment. Instead, he can concentrate on studying what went wrong in Week 1 so the issues don't reappear against the San Francisco 49ers.