Nicky Hayden has successfully undergone surgery on his injured wrist, sustained during the season-ending round of the 2011 MotoGP World Championship season.

The American was one of four riders to fall at the opening bend in Valencia, Ducati rider Hayden eventually being diagnosed with a non-displaced fracture of the scaphoid and radial styloid.

During the operation, which was carried out at the Fremont Sports Therapy and Surgery Center in Fremont, California, USA, Dr. Arthur Ting placed a small screw in Hayden's fractured scaphoid. The styloid was not treated.

"Everything went pretty smoothly," he said. "The scaphoid is a slow-healing bone, so you don't want to wait, only to find out in January that it's not healing correctly. I'm happy to get it fixed right so that I'll be ready to go when I need to be."

Hayden, who was forced to skip the post-season Valencia test, is now on the road to recovery and is confident he will be back to full fitness when official testing for the 2012 MotoGP season begins at Sepang on January 31st.