"We're going to go ahead and proceed with surgery," Roberts said in a news conference Sunday just before the Orioles-A's game. "It just hasn't responded the way that we were hoping it would. We kind of knew this was a possibility going in, but we wanted to give it the best possible shot we could."
Roberts said that the tear in the labrum in the hip can present itself as a groin strain at times and feels like groin pain a lot of times, but he said that his groin area is fine. He added that there's not yet an exact date yet for the surgery, but assumes it could be in the next seven to 10 days days.
He's talked with Ed Reed of the Baltimore Ravens, who had similar surgery before the 2010 season. Roberts said he'll likely have it in Vail, Colo., where Reed did, and there's a four to six month recovery period, which would make the second baseman ready for next season.
"The main goal right now is to get ready for 600 good at-bats in 2013," Roberts said.
Roberts has been on the disabled list since July 3 with the injury. Roberts went to one doctor who said surgery was the best option, but a second doctor said why not give playing a try and see what happens.
Roberts did that on Saturday, playing a game for the Class A Aberdeen IronBirds -- Cal Ripken's team. But Roberts went 0-for-4 with a walk and a run scored and said he knew it was time for the surgery, especially since he's got a cortisone shot in there and the pain and symptoms of the injury remain.
However, the doctors have told him there's a 95 percent chance he'll be able to play just as well as before, or better, after the operation.
Still, it's another tough ending to another tough season for Roberts, who's been saddled with injury problems since 2010.
Concussions cost him most of both 2010 and 2011, when Roberts played a total of just 98 games. Roberts battled through that to return this season on June 12, before the hip problem sidelined him after just 17 games.
He was batting .182 with no homers and five RBIs this season.
"It's been a long two years," Roberts said. "It certainly hasn't gone the way that I would have drawn it up. It's very hard, to sit here and watch those guys play in these games."
Manager Buck Showalter gave credit to Roberts for trying to battle back through the injury and help his team this season. But the skipper is looking forward to next year.
"He'll go to Colorado and get it done," Showalter said. "And he should be ready to go and be a big part of our club next year."
Jeff Seidel is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.