The procedure, which effectively ended Young's 2009 season, was called a success by Padres manager Bud Black.
"The doctors were pleased with the surgery, pleased with what they found and what they had to do," Black said. "They didn't know what to expect, really."
After a brief recovery period, Young will begin a six-week rehabilitation program that puts him on track to be fully healthy by Spring Training next season.
"He'll be 100 percent by Spring Training," Black said. "If this was a situation where this happened in the middle of the season, middle of the summer, he would be rehabbing over a six-week period and then put on a throwing program. That will probably not be done, because in six weeks the season will be over, so he will continue a rehabbing program, and I'm sure at some point in November or December he'll start his normal throwing."
Young started 14 games before suffering the injury, going 4-6 with a 5.21 ERA.
Tim Powers is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.