Tiger Woods underwent reconstructive surgery on Tuesday to repair a torn ligament in his left knee, an operation described as a success by his doctors. The American world number one decided last week to have a fourth operation on the same knee, just two days after playing through pain to win the US Open in San Diego. “We were confident going into this surgery and I am pleased with the results,” Dr. Thomas D. Rosenberg said in a statement issued by Woods' management team. “There were no surprises during the procedure, and as we have said, with the proper rehabilitation and training, it is highly unlikely that Mr. Woods will have any long-term effects as it relates to his career.” Woods, 32, decided to shut down his 2008 campaign after clinching his 14th major title at the US Open eight days ago, winning a 19-hole playoff against compatriot Rocco Mediate.