Arnold Schwarzenegger recovering after shoulder surgery

Actor Arnold Schwarzenegger was happy and upbeat Friday after undergoing surgery to repair a shoulder injury suffered while performing a motorcycle stunt for his upcoming movie "Terminator 3: Rise of the Machines."

The 55-year-old star tore the rotator cuff in his left shoulder last fall but opted against surgery at the time to avoid holding up production on his film. He was admitted to St. John's Health Center in Santa Monica on Wednesday and released Thursday.

"Apparently he's doing well," said his publicist Jill Eisenstadt. "He's looking forward to just getting back to work and being able to work out."

Schwarzenegger will have to wear a sling to immobilize his shoulder for three to four weeks, she said. However, he is expected to make all of his scheduled appearances, including a multistate tour for his Inner-City Games Foundation next week, she said.