Mets pitcher Dillon Gee had surgery Friday to replace part of a damaged artery in his right throwing shoulder.

The Mets said the procedure, which came four days after Gee was hospitalized with a blood clot, "went as expected." They are unsure when he will be able to return to throwing or other baseball activities.

Earlier testing at New York-Presbyterian Hospital showed the clot in an artery in Gee's right shoulder, which doctors were able to break up using a catheter.

Gee, who initially complained of numbness in the fingers on his right hand, is 6-7 with a 4.10 earned run average in 17 starts this season.