San Antonio Spurs guard Manu Ginobili says he needs arthroscopic surgery to repair a ligament injury in his left heel.

"They're going to operate on me," he told Argentina's La Nacion newspaper Friday. The 31-year-old doesn't know when he'll have the surgery or who will do it.

Ginobili, who helped lead Argentina to a bronze medal in the Beijing Olympics, said an MRI exam of the injury showed no improvement.

"It's the same as it was two months ago, when they did the first exam," he said. "Now, the thing is, it's not better either, and it seems like the only way to repair it completely is arthroscopic surgery."

Ginobili hurt the ankle during the NBA playoffs, and Spurs coach Gregg Popovich had urged his player not to compete in the Olympics unless the injury improved.