Bills wide receiver Stevie Johnson is scheduled to have "very minor" surgery to repair a groin injury that nagged him for most of last season. Agent C.J. Laboy confirmed Monday that the surgery is scheduled to take place in Philadelphia on Tuesday. Johnson announced the news himself on his Twitter account, noting he wants to be 100 percent healthy heading into the season.

Lions running back Jahvid Best has not been limited during the team's voluntary offseason program. Jim Schwartz said Saturday that Best is "doing the same things everybody else is doing." Best is coming back from a season-ending concussion. "I saw (Best) in the meeting room, but I haven't seen him working out," Martin Mayhew said of Best, who 11 games last season because of a concussion sustained against the 49ers. "From what I understand, he's been doing everything, as far as conditioning and working out with everybody."

Darren McFadden took part in Oakland's voluntary workouts on Tuesday, a good sign after an injury ended his 2011 season early. "He's one of our most explosive players on offense," coach Dennis Allen said. "He's a dangerous weapon. We're looking forward to finding different ways of using him and kind of exploiting his talents." McFadden was in the midst of a breakout season before a Lisfranc injury cost him nine games.

Broncos tight end Julius Thomas, who saw his rookie season ruined by a severe Week 2 ankle injury last September, had surgery to repair ligaments this past week. Thomas will begin his recovery as Denver is set to open their offseason program on April 16. He will be limited to work with the team's training and medical staff as the Broncos go through their offseason conditioning and team workouts over the next two months.

Jaguars defensive tackle Terrance Knighton had eye surgery Sunday after an undisclosed incident. According to his Twitter page, Knighton was at Pure nightclub in Jacksonville, but team officials say they are "gathering information about what happened and are not able to further comment at this time." The Jaguars say in a statement that "our concern and our focus is on Terrance and his health and recovery."

Raiders head coach Dennis Allen is not allowed to go out on the practice field until April 17, but he has heard good things from the strength and conditioning coaches this week about Darren McFadden. McFadden suffered a season-ending foot injury in Week 7 last year. "I am told that he's back and ready to go," Allen said.

Percy Harvin announced Monday night that he will require surgery on his shoulder. However, the Vikings receiver doesn't expect to miss significant time. "Just found out I will need surgery on shoulder," Harvin tweeted. "Recovery should be quick I will be ready for (organized team activities)."

Ahmad Bradshaw says his fractured foot is feeling much better but he still expects to miss all organized team activities and minicamp as he recovers from an injection in his right foot. The Giants running back had bone marrow taken from his hip and injected into the troublesome foot to help the bone heal quicker. "I feel great," Bradshaw said. "I got the injection in February. I feel tremendous after a month. Right now I have a lot of confidence that I will be able to just be a pound-for-pound back and just hold my own. "I probably can (run now) but I am not going to try for two or three months more," he added. "I just want to rest as much as I can. By the time training camp comes, I want to practice every week and start the season off right."

Patriots linebacker Brandon Spikes said Sunday that his recovery is going well following an arthroscopic surgery that took place a few weeks ago. Spikes came out of the Super Bowl in need of knee surgery. "It's going good. I'm just rehabbing, trying to get better, staying on top of it," Spikes said. "I had surgery a couple weeks ago. This was like my first surgery ever. But it's going well. It was just something that needed to be done, so I make sure I don't do anything to it in the upcoming season."