Coach Andy Reid confirmed Monday that fullback Jon Ritchie tore the anterior cruciate ligament in his left knee and will miss the rest of the season.
The Eagles have one other fullback on their roster. That's rookie Thomas Tapeh, who was inactive for Sunday's game. The Eagles like the fifth-rounder out of Minnesota. But he's more of a one-back guy who still is trying to get a grasp of the Eagles' offense.
The 6-2, 250-pound Parry, who spent all of last season on the club's practice squad, is more of a true blocking fullback, much like Ritchie.
"When we let him go, I knew he could play in this league and I knew he could contribute for a team," Reid said. "He's a smart kid with good hands. He's a tough kid and a willing blocker. I know he can step in and play."
Right guard Jermane Mayberry also was injured in Sunday's win over Detroit. He tore a bicep tendon in his arm and was scheduled to see a specialist on Monday. But Reid said he doesn't think the injury is serious enough to sideline Mayberry.
"The difference with his (bicep tear) is it's up high where you've got two tendons connected to the shoulder as opposed to down low where you only have one," Reid said. "Normally, you can continue to play. He might be out a few days, but he should be OK. He said he felt a little better this morning. He feels he has a little bit more strength than (he did after the game on Sunday)."
Mayberry suffered the injury early in the fourth quarter. He was replaced by Steve Sciullo, who was claimed off waivers from the Indianapolis Colts three weeks ago. Sciullo started 13 games for the Colts last year.
Eagles coach Andy Reid wasn't happy with long-snapper/tight end Mike Bartrum for getting flagged for a 15-yard penalty Sunday for his post-touchdown celebration after catching only the fourth touchdown pass of his career. Immediately after scoring, Bartrum snapped the ball through his legs from the end zone to quarterback Donovan McNabb, who was about 20 yards away.
"I didn't like it," Reid said at his Monday news conference. "I don't want to get into it. Let's move on."
Said Bartrum: "I was just excited. I always told Donovan that if I caught one, I'd figure out some way to celebrate. It wasn't planned. It just happened. But I shouldn't have done it."
--The Eagles have scored 27 or more points in seven straight regular-season games.
--TE L.J. Smith suffered a shoulder contusion in the second half of Sunday's game against the Lions, but the Eagles think he should be ready to play this week against Chicago.