And there is the question that no one can definitively answer because there's no way of knowing. Based on past history it would be a huge gamble for Fisher/Snead to roll the dice on Sam Bradford once again. It is possible however to return from two ACL surgeries and have success.
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http://www.usatoday.com/story/gameon/2013/01/09/nfl-rg3-knee-surgeries-others/1820461/
Good news for RGIII? Three players who came back from two ACL tears
Chris Strauss, USA TODAY, January 9, 2013
With Robert Griffin III's father confirming that his son
needed reconstructive surgery on his right ACL(along with his LCL) for the second time since 2009, the next question after the length of his recovery time is how he'll be able to perform once he is healed. We've seen many skill players - Tom Brady, Jamaal Charles and Adrian Peterson among recent examples - come back good as new from their knee injuries, but there's a smaller list of players who've returned from the same injury twice.
One thing in Griffin's favor in addition to his youth is that it's not a complete tear of the ACL this time.
Here are several other players who've gone through similar issues.
Casey Hampton, DT, Pittsburgh Steelers
The 325-pound All-Pro defensive tackle just finished the twelfth year of his NFL career despite having three ACL reconstructions, the first on his left knee in college in 1997 and his right knee twice while with the Steelers in 2004 and 2012. In 2004, a piece of his patellar tendon was used to repair the right knee. In 2012, they used an Achilles tendon from the cadaver of a deceased 19-year-old.
"Once you do it, having two, the third one is a little bit easier because you kind of know what to do," Hampton told USA TODAY Sports last month. "You know how to rehab, you know what's going to make it hurt, what's going to make it not hurt. You're not really worried about tearing it again. You don't have the same fears because you've done been through it before."
"If I wasn't playing football, I wouldn't have did surgery (in 2012)."
Hampton returned from the January surgery in time to start all 16 games for the Steelers this season.
Thomas Davis, LB, Carolina Panthers
Davis tore the ACL of his right knee three times in three years before returning to the Panthers this season. After seeing minimal action in the first month of the year, Davis started the team's final 12 games, amassing 70 tackles in the process.
"I feel good,"
Davis told USA TODAY Sports in June. "Now it's all about going out there and regaining that confidence and being out there with my teammates. I mean, hey, I've been through it enough to know the process and know what to do and what not to do."
Domenik Hixon, WR New York Giants
The Giants' backup wideout tore his right ACL in both 2010 and 2011 but returned to training camp in 2012 at full speed after a September 2011 surgery sidelined him for nearly a year. Hixon went on to have the second-best season of his seven-year NFL career in 2012, grabbing 39 catches for 567 yards.
"It felt like the same year, the same stuff, doing it all over again," Hixon
told the New York Daily News in August, referencing the second injury. "Mentally getting past it is tougher than physical, definitely."
"You kinda have a year, and you're expected to come back and play. It'd be awesome to have a year and a half, two years, to really rehab, make sure the ligaments heal. But in our job, we don't have that luxury."