(Photo credit: Al Bello/Staff) Cornerback Aaron Glenn #31 of the New York Jets injures his leg on December 5, 1998 after intercepting a pass intended for wide receiver Joey Galloway #84 of the Seattle Seahawks during the game at Giants Stadium in East Rutherford, New Jersey. The Jets defeated the Seahawks 32-31.
(Photo credit: Jamie Squire/Getty Images) Bill Gramatica of the Arizona Cardinals injures himself while celebrating a field goal against the New York Giants during a December 12, 2001 game at the Meadowlands in East Rutherford, New Jersey. The Giants won 17-13.
(Photo credit: MATT CAMPBELL/AFP/Getty Images) Arizona Cardinals kicker Bill Grammatica leaps into the air to celebrate a short field goal then pulls up his right leg and collapses to the ground injured in the first quarter against the New York Giants 15 December 2001 at Giants Stadium in East Rutherford, NJ.
(Photo credit: Brian Bahr/Getty Images) Running back Tyrone Wheatley #47 of the Oakland Raiders injures himself as he twists over cornerback Kelly Herndon #31 of the Denver Broncos on November 28, 2004 at Invesco Field at Mile High Stadium in Denver, Colorado. The Raiders won 25-24.
(Photo credit: Harry How/Getty Images) James Hall #96 of the Detroit Lions lays injured on the field as Muhsin Muhammad #87 of the Chicago Bears celebrates a first down with Mark Bradley #16 during the second quarter at Soldier Field on September 18, 2005 in Chicago, Illinois.
(Photo credit: Doug Pensinger /Allsport) A Referee is injured during the game between the Detroit Lions and the Washington Redskins at the RFK Stadium in Washington, D.C.. The Redskins defeated the Lions 36-30.
(Photo credit: Nick Laham/Getty Images) Chad Pennington #10 of the New York Jets injures his ankle while being sacked against the New England Patriots on September 9, 2007 at Giants Stadium in East Rutherford, New Jersey. The Patriots defeated the Jets 38-14.
(Photo credit: Jonathan Daniel/Getty Images) Adrian Peterson #28 of the Minnesota Vikings is upended on a hit by Al Harris #31 of the Green Bay Packers, forcing Peterson from the game with an injury, on November 11, 2007 at Lambeau Field in Green Bay, Wisconsin. The Packers defeated the Vikings 34-0.
(Photo credit: Jonathan Daniel/Getty Images) Cedric Benson #32 of the Chicago Bears is hit by Hamza Abdulla #21 of the Denver Broncos forcing Benson to leave the game with an injury on November 25, 2007 at Soldier Field in Chicago, Illinois.
(Photo credit: Scott Boehm/Getty Images) Wide receiver Ruvell Martin #82 of the Green Bay Packers lays on the field after an injury against the Cincinnati Bengals at the Lambeau Field on August 11, 2008 in Green Bay, Wisconsin. The Bengals defeated the Packers 20-17.
(Photo credit: Al Messerschmidt/Getty Images) St. Louis Rams cornerback Terry Fair falls to the turf with a shoulder injury after he is hit by a knee against the Detroit Lions in a pre-season game on August 29, 2005 at Ford Field, in Detroit, Michigan.
(Photo credit: Nick Laham/Getty Images) Brandon Jacobs #27 of the New York Giants is tackled by Brodrick Bunkley #97 of the Philadelphia Eagles, he left the game injured after the play, at Giants Stadium on December 7, 2008 in East Rutherford, New Jersey.
(Photo credit: Jonathan Daniel/Getty Images) Alex Brown #96 of the Chicago Bears rolls on the ground after suffering an injury in the 4th quarter against the Pittsburgh Steelers on September 20, 2009 at Soldier Field in Chicago, Illinois. The Bears defeated the Steelers 17-14.
(Photo credit: Scott Boehm/Getty Images) Defensive tackle Albert Haynesworth #92 of the Washington Redskins lays on the field injured as he is attended to by trainers in the first half against the Detroit Lions at Ford Field on September 27, 2009 in Detroit, Michigan.
(Photo credit: Scott Boehm/Getty Images) An injured player has ice applied to his leg on the sidelines during the NFL Scouting Combine presented by Under Armour at Lucas Oil Stadium on March 1, 2010 in Indianapolis, Indiana.
104025607.jpg Defensive end Connor Barwin #98 of the Houston Texans goes down with an injury in the first quarter against the Indianapolis Colts during the NFL season opener at Reliant Stadium on September 12, 2010 in Houston, Texas.
(Photo credit: Harry How/Getty Images) LaRod Stephens-Howling #36 of the Arizona Cardinals takes a hit from Geno Hayes #54 of the Tampa Bay Buccaneers resulting in an interception and injury during the fourth quarter at University of Phoenix Stadium on October 31, 2010 in Glendale, Arizona.
(Photo credit: Kevin C. Cox/Getty Images) Charles Woodson #21 of the Green Bay Packers is injured as he attempts to break up a pass intended for Mike Wallace #17 of the Pittsburgh Steelers during Super Bowl XLV at Cowboys Stadium on February 6, 2011 in Arlington, Texas. The Packers won 31-25.
(Photo credit: Scott Boehm/Getty Images) Brandon Keith #72 of the Arizona Cardinals is attended to after an injury by Referee Jeff Triplette against the Green Bay Packers in a preseason game at Lambeau Field on August 19, 2011 in Green Bay, Wisconsin.
(Photo credit: Scott Boehm/Getty Images) Johnny Knox #13 of the Chicago Bears kneels down injured on the field during the game against the Green Bay Packers at Soldier Field on September 25, 2011 in Chicago, Illinois. The Packers defeated the Bears 27-17.
(Photo credit: Peter Aiken/Getty Images) Strong safety Troy Polamalu #43 of the Pittsburgh Steelers goes down with a head injury after making a tackle on offensive tackle Steve Maneri #68 of the Kansas City Chiefs during the first quarter on November 27, 2011 at Arrowhead Stadium in Kansas City, Missouri. Pittsburgh defeated Kansas City 13-9.
(Photo credit: Scott Boehm/Getty Images) Louis Murphy #18 the Oakland Raiders kneels on the field injured as he talks with Michael Bush #29 during the game against the Green Bay Packers at Lambeau Field on December 11, 2011 in Green Bay, Wisconsin. The Packers defeated the Raiders 46-16.
(Photo credit: Marc Piscotty/Getty Images) Andre Carter #93 of the New England Patriots holds his knee after an apparent injury while playing against the Denver Broncos on December 18, 2011 during the first half at Sports Authority Field at Mile High in Denver, Colorado.
(Photo credit: Ronald Martinez/Getty Images) Tony Romo #9 of the Dallas Cowboys has his hand wrapped after suffering an injury during play against the Philadelphia Eagles at Cowboys Stadium on December 24, 2011 in Arlington, Texas.
(Photo credit: Al Bello/Getty Images) Tight end Travis Beckum #47 of the New York Giants gets assisted off the field after injuring his ACL during the game against the New England Patriots in the second quarter during Super Bowl XLVI at Lucas Oil Stadium on February 5, 2012 in Indianapolis, Indiana.