Cowboys defense hobbled with injuries

IRVING, Texas -- The Dallas Cowboys' defense began preparing to face the NFC's highest-scoring offense without three starters.

The defensive starters who did not practice Wednesday were inside linebackers Bradie James (knee) and Keith Brooking (foot) and strong safety Gerald Sensabaugh (quadriceps). Nickel back Orlando Scandrick (concussion) also did not practice.

Reserve inside linebacker Sean Lee did not wear full pads like the rest of the Cowboys, but he's listed as having limited participation on the official injury report.

Running back Marion Barber, who missed Sunday's win over the Indianapolis Colts with a strained left calf, did not practice and isn't likely to play Sunday against the Philadelphia Eagles.

James hasn't practiced on the last several Wednesdays since spraining the PCL in his knee. Brooking barely practiced last week due to a strained left foot, but he started against the Colts to extend his consecutive games played streak to 156, the second-longest among active linebackers.

Lee, a rookie second-round pick, earned NFC Defensive Player of the Week honors for his two-interception performance against the Colts. Lee injured his shoulder on his 31-yard touchdown return in the second quarter, but he returned to the game and finished with nine tackles. His second interception set up the game-winning field goal in overtime.

Scandrick also returned an interception for a touchdown against the Colts. He sustained a concussion in the second quarter when he collided with Sensabaugh and did not play in the second half.

Sensabaugh suffered a bruised quadriceps in the second half but missed only one play.

In other injury news, rookie receiver Dez Bryant was placed on injured reserve. The Cowboys signed inside linebacker Kenwin Cummings off the New York Jets' practice squad to take the roster spot.

Cummings has spent most of the last three years on the Jets' practice squad and was active for one game this season with one special teams tackle. He joined the Jets as an undrafted free agent out of Wingate in 2008. The Cowboys must keep Cummings on their active roster for three games, per league rules.

Tim MacMahon covers the Cowboys for ESPN Dallas. You can follow him on Twitter. Todd Archer of ESPNDallas.com contributed to this report.