An MRI on Thursday determined the need for the surgery on Aardsma’s right elbow and it will be performed by Dr. Lewis Yocum next week in California.
Aardsma will be out for the rest of the 2011 season and possibly much of next season recovering from the surgery.
It has been a tough time for the 29-year-old as he has not pitched at all this season.
He was first out due to offseason surgery on his left hip then during his rehab assignment with Triple-A Tacoma he strained a ligament in his right elbow. He tried to rehab the elbow without surgery, but team medical director Edward Khalfayan reviewed the MRI results and conferred with Yocum before recommending surgery.
Aardsma went 0-6 with a 3.44 earned run average and 31 saves over 53 appearances in 2010.
He has a 13-15 mark with a 4.20 ERA and 69 saves over six seasons with the Giants, Cubs, White Sox, Red Sox and Mariners.