Agent Brodie Van Wagenen of CAA Sports says Wednesday's procedure went as expected and Storen should be 100 percent fine after he goes through rehabilitation.
Storen saved 43 games in 2011, his first full major league season, going 6-3 with a 2.75 ERA. The right-hander is on the 15-day disabled list.
The Nationals took him 10th overall in the 2009 amateur draft out of Stanford.
General manager Mike Rizzo declined to comment about Storen, saying he will meet with the media on Thursday when the Nationals host the Cincinnati Reds in Washington's home opener.