Rangers general manager Jon Daniels said the right-hander was bothered by a "dull ache" in the area starting about three weeks ago and decided to get it taken care of now. It means he will likely start spring training a little behind, but the club expects him to be ready for Opening Day.
Daniels said Adams likely would have rested it during the season and then pitched through it.
"But given that we still have six weeks before spring training, he elected to get it fixed," Daniels said. "It went very well. It's an outpatient-type deal and he's doing well. It's a minor enough procedure where it should not impact his season."
Adams was acquired from San Diego at last year's trade deadline to help bolster the Rangers' bullpen down the stretch and in the postseason. He was 2-3 with a 2.10 ERA with 25 strikeouts and five walks in 25 2/3 innings (27 appearances) for Texas, mainly as the setup man for closer Neftali Feliz. Adams was 2-0 with a 3.24 ERA in 11 appearances (8 1/3 innings) in the playoffs.
He's expected to have a similar role this season with Joe Nathan coming in as the closer and Feliz shifting to the starting rotation.
Richard Durrett covers the Rangers for ESPNDallas.com.