WWE has announced that SmackDown Live Superstar and 13-time WWE World Champion Randy Orton underwent successful knee surgery today.

The following comes from WWE.com:

Randy Orton has undergone successful surgery to repair a medial meniscus tear in his left knee, WWE.com can confirm. 
 
“I’ve known I needed the surgery since late last year, but I’ve been waiting for the right time to get my knee cleaned out,” Orton told WWE.com. “Right now was the right time.”
 
The Viper is currently recovering at home with his family, but says he is “staying motivated to come back and dominate the blue brand.” 
 
Stay with WWE.com as more details on Orton’s condition become available.