Marshall Faulk injured his left hand against Seattle Sunday, but St. Louis coach Mike Martz did not know the extent of the injury or how long the Pro Bowl running back would be out.
Faulk left in the third quarter of the Rams' 24-23 loss. Afterward, Martz said he was not sure whether the hand was broken.
Martz said Faulk would be examined again when the team returned to St. Louis.
Minnesota quarterback Daunte Culpepper left the Vikings' 23-13 win over Detroit with a bruised back, but expects to play in the Vikings' next game.
Culpepper was injured when he was hit by linebacker Wali Rainer just after scoring his second rushing touchdown of the game.
Culpepper said he "absolutely" expected to play in the next game, at home against San Francisco.
Detroit's Joey Harrington dislocated his right index finger when he hit center Dominic Raiola's helmet after throwing a pass late in the second quarter, but he returned for the second half.
Also in that game, Lions kick returner Eddie Drummond was carted off the field with a sprained right ankle. Drummond's right leg buckled when he was tackled by Raonall Smith and Mike Nattiel on a kickoff midway through the third quarter.
Also for Detroit, Andre Goodman (dislocated shoulder), Ray Brown (chest) and Shawn Jefferson (ribs) left with injuries. Minnesota's Billy Lyon left with a strained calf.
Houston quarterback David Carr left the Texans' 42-12 loss to the Chiefs after injuring his right calf.
Running back Corey Dillon strained his groin in Cincinnati's 17-10 loss to the Pittsburgh Steelers and missed the second half.
Also, Steelers CB Chidi Iwuoma left in the second half with a mild concussion and Bengals TE Matt Schobel pulled his left hamstring and didn't play in the second half.