The Eagles on Wednesday re-signed defensive tackle Antonio Dixon and placed quarterback Nick Foles on injured reserve.

Dixon, 27, spent the last three seasons with the Eagles. He was released Aug. 31 and played two games with the Indianapolis Colts.

The move was needed because the Eagles were down to three healthy defensive tackles after Fletcher Cox suffered a concussion.

Dixon understands the Eagles defense.

"He'll know most of the terminology, and we'll just see," coach Andy Reid said. "We'll see how much he actually plays. I haven't put all of the active list together, but I would presume if he's in good shape that he'll have an opportunity to step in and do a couple of things."

Dixon has been working out at "boot camp" in Homestead, Fla., and said he weighs 325 pounds. He was not an ideal fit for former defensive line coach Jim Washburn's wide-nine system, but he fits what the Eagles are doing under new line coach Tommy Brasher.

Dixon signed a two-year contract, so he can compete for a job during training camp in 2013.

Extra points

Cox and linebacker Mychal Kendricks both missed practice with concussions. Reid said Cox's concussion appears "a little worse" than Kendricks', although both were still undergoing examinations. Cox has headaches and migraines. "They'll go through the protocol and just see what happens with it," Reid said.

Akeem Jordan took first-team snaps at outside linebacker in place of Kendricks. Derek Landri was lining up with the starting defense in Cox's place. . . . Stanley Havili returned to practice after missing last week with a hamstring injury. Emil Igwenagu, who started in Havili's place, is rotating between tight end and fullback.

Jeremy Maclin was limited with a knee injury. . . . The Eagles signed linebacker Marcus Dowtin to the practice squad. The Georgia and North Alabama product played three games with the Jets earlier this season on special teams.

Eagles Notes:

Birds re-sign defensive tackle Antonio Dixon. D2

Jason Babin criticizes Eagles for the way he and Jim Washburn were treated. D2

Tom Coughlin wants his Giants to play with pride. D3

Contact Zach Berman at zberman@phillynews.com, or follow on Twitter @ZBerm.