Joba Chamberlain dislocates ankle -- by playing on a trampoline

A bad bounce for New York Yankees reliever Joba Chamberlain. Chamberlain was rushed to emergency surgery Thursday night after an open dislocation of his right ankle at Yankees spring training in Tampa, and his entire 2012 season is now in question.

More aggravatingly for Yankees fans -- Chamberlain injured the ankle while jumping around on a trampoline.  Chamberlain was reportedly playing with his five-year-old son on the trampoline at the time of the injury.

This injury is no child's play. ESPN reports that Chamberlain suffered an open leg wound, while Sports Illustrated notes that a bone was popping out of Joba's leg. Chamberlain is expected to remain in the hospital for several days.

Yankees general manager Brian Cashman could offer no timetable for Joba's return. "He's facing a lot right now," Cashman told Sports Illustrated. "I can't tell you, really, anything more than something unfortunate happened. We're in the very early information side of this thing."

Chamberlain was already on the disabled list to start with, following Tommy John surgery to his elbow last summer. He was not expected to return until June at the earliest, but that was before this whole trampoline accident thing happened.

Now Chamberlain appears likely to miss the entire 2012 season. ESPN's resident medical expert Dr. Michael Kaplan notes that Chamberlain will not only be unable to train and condition for months, he won't even be able to put weight on the leg for another 4-6 weeks.

And that's a lot of weight Joba puts on that leg, you know.

Cashman told the New York Daily news that he does not know whether Chamberlain was actually jumping on the trampoline when the injury occurred. "Any of you who have kids, there's places out there you can go with your children and it's a lot of gymnastic stuff," Cashman said. "That's what it sounds like. That's a loose description."

But you know Cashman's got about 15 private investigators looking into it right now.

Chamberlain's little five-year-old son Carter was reportedly not hurt in the incident.