California Gov. Arnold Schwarzenegger has had surgery to repair his right knee, which he injured while exercising about two weeks ago.

The 61-year-old former bodybuilder had his knee examined Saturday after experiencing some discomfort. His staff said Sunday that the torn cartilage in his knee was repaired by arthroscopic surgery.

Schwarzenegger was under anesthesia for about 45 minutes Saturday. The powers of his office were transferred to Lt. Gov. John Garamendi during that time.

Spokesman Matt David called the operation minor and said Schwarzenegger was walking on his own Sunday.

The former actor has suffered numerous physical injuries over the years, most recently breaking his thigh bone while skiing in 2006.