Dickerson had part of the hamate bone in his hand removed on Monday. Doctors also cleaned out his wrist, which has been bothering him for a while.
Dickerson aggravated the wrist on a swing and went on the 15-day disabled list Friday. He batted .227 with no homers or RBIs during nine games this season.
The Reds called up outfielder Chris Heisey to take his place. Heisey was their minor league player of the year last season. He didn't get into a game during a weekend series in St. Louis, but started in right field on Monday against the Mets.