Gordon had an MRI on Tuesday morning that showed "significant" debris and he opted for the procedure, which will take place Wednesday, D'Antoni said.
"It's been bothering him, actually, from the middle of last year," D'Antoni said. "I think he's probably relieved that he can clean it up, get it going, so he can come as back strong as ever."
Gordon is off to a slow start for the 7-3 Rockets, averaging 10.9 points in 29.4 minutes per game. He's averaging more turnovers (1.3) than assists (.08).