Dallas Cowboys running back Darren McFadden will be out for the next two months with a broken elbow, head coach Jason Garrett announced Tuesday before the start of the team's mandatory minicamp.

Garrett told reporters that McFadden injured his elbow in an accident at home over Memorial Day weekend, although he did not reveal specific details about the accident.

Cowboys optimistic McFadden might return in time for camp. Apparently he injured his elbow in an accident at home. Practiced w/ it last wk.

— David Helman (@HelmanDC) June 14, 2016

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#Cowboys RB Darren McFadden suffered a broken elbow in a home accident & will have surgery today. Should be back by the end of training camp

— Ian Rapoport (@RapSheet) June 14, 2016

McFadden practiced with the injury all last week and did not tell the Cowboys about it until Monday. An X-ray revealed the elbow was fractured, prompting McFadden to undergo surgery Tuesday morning.

Garrett said McFadden will miss "a couple months," but hopes the veteran will be able to return during training camp and should be ready for the season opener in September.

Darren McFadden had surgery on the injury he suffered to his elbow two weeks ago. Garrett expects him to be out for "a couple months."

— David Helman (@HelmanDC) June 14, 2016

Cowboys RB Darren McFadden (elbow) and Benson Mayowa (knee) had surgeries, per Jason Garrett. Hope is Mayowa back for camp, D-Mac for opener

— Albert Breer (@AlbertBreer) June 14, 2016

The injury could be a major setback for McFadden, who will have to compete for carries with rookie running back Ezekiel Elliot, the Cowboys' first-round pick. Elliot, who was drafted No. 4 overall, will get plenty of reps in minicamp and training camp, and will likely have a leg up on McFadden and Alfred Morris for the top spot on the team's depth chart. Dallas signed Morris as a free agent this offseason.

McFadden is the second big-name player on the Cowboys to get injured this spring. Defensive end Benson Mayowa will have a knee scope Tuesday, although he is expected to recover in time for training camp.