The move is retroactive to April 22. Arizona recalled outfielder Roger Kieschnick from Triple-A Reno to take Trumbo's roster spot.
Trumbo flew home to Arizona to get an evaluation and an MRI revealed the stress fracture.
Trumbo was part of a three-way trade with the Chicago White Sox and Los Angeles Angels during the offseason. He is hitting .210, with seven home runs, 19 RBIs and has struck out 22 times.