The same problem that Bo Jackson has... http://www.jsonline.com/packer/news/aug05/348858.asp Here's a snippet... <div class='quotetop'>QUOTE </div><div class='quotemain'>What, his hip? Favre reveals he has avascular necrosis By TOM SILVERSTEIN Green Bay - Standing next to the man who put his career on the line by bringing him to the Green Bay Packers, quarterback Brett Favre did not look like someone who needed a hip replacement. Brett Favre has been playing for 14 years in the NFL with a hip condition known as avascular necrosis. Fourteen years in the National Football League have taken a toll on the three-time MVP, but throughout it all his hip has held up pretty well. Recalling a conversation he had with former Packers general manager Ron Wolf at practice Tuesday, Favre told reporters in his weekly news conference that he originally had failed his physical with the Packers after Wolf traded a first-round draft choice to Atlanta for him. According to Favre, Wolf went down and told the medical staff to pass Favre and the rest is history.</div>
He's had this since the time he was drafted, most experts gave him 3-4 years to play the game wow were they wrong.
