Dwight Howard's season is over for the Orlando Magic

Back surgery likely to keep the star centre out of the United States' Olympic bid, too.

Dwight Howard is now a doubt for the Olympics after back surgery

Dwight Howard's season is over. His chances to help Team USA win another Olympic gold are likely done, too.

Orlando's All-Star centre told ESPN.com he will have season-ending back surgery.

Today's operation in Los Angeles to repair a herniated disk also will keep him from playing in the Olympics in London, Howard's agent, Dan Fegan, told ESPN.com.

"I tried to play through it and it just made my back worse," Howard told ESPN.com

Howard has been dealing with back problems since early March, but it wasn't until last week that a doctor discovered the herniated disk.

"He said I can start rehab right away and be back to full contact in four months," Howard told ESPN.com. "So I'm not really concerned. If anything, I'll come back stronger."

Howard has missed the last six games because of the injury. Orlando hold the sixth play-off spot in the Eastern Conference, and coach Stan Van Gundy said last week that he was preparing to play the rest of the season without Howard.

Now it looks as if Team USA will have to plan to play without Howard as well.

USA Basketball chairman Jerry Colangelo said yesterday he had not been told of Howard's plans and it was too early to speculate on the Olympic team.

The final roster of 12 players and six alternates is due on June 18 and the US may have to consider increasing its pool of possible candidates with Howard out and fellow big man LaMarcus Aldridge iffy following right hip surgery.

"I understand exactly who's involved," Colangelo said. "The only thing I don't know is the extent of Dwight Howard's situation, and I really want to find out more about that. But we may have to consider, you know, invitations to a couple [other] players. That's a possibility. We'll talk about it."

The surgery is the latest development in the Magic's soap-opera season that has grabbed more attention than the team's record.

Howard was the subject of season-long trade rumours until declaring in February his intention to remain in Orlando for one more year. The controversy continued earlier this month when Van Gundy said Howard asked team management to fire him. Howard has since denied that.

Before this season, Howard had only missed two games in his career because of injury.

Howard is averaging 20.6 points and 14.5 rebounds.

The Magic also have been playing without Hedo Turkoglu [facial fracture] since April 5. He is averaging 10.7 points and is shooting 34.9 per cent on 3-pointers.

With Howard and Turkoglu sidelined, Van Gundy has started Glen Davis at centre with Jason Richardson and Ryan Anderson at forward. JJ Redick and Jameer Nelson start in the backcourt.