On Tuesday (Feb. 26 2013), it was announced Ultimate Fighting Championship (UFC) flyweight champion Demetrious Johnson was forced out of his scheduled title defense against John Moraga at The Ultimate Fighter 17 Finale with an undisclosed injury.

Now the details of that injury has been revealed, as "Mighty Mouse" suffered a torn labrum that will keep him out of action for a minimum of 12 weeks.

Matt Hume, who is Johnson's head coach at AMC Pankration in Kirkland, Wash., announced the injury on Friday's (March 1, 2013) edition of "Inside MMA" on AXS TV.

Johnson (17-2-1) has been one of the most active fighters in the UFC of late, as the TUF 17 Finale would have been his fifth fight in 13 months. It seems the frequent fight schedule finally caught up to him, though, as Johnson's injury was reportedly sustained in training.

The 26-year-old is coming off his first successful 125-pound title defense, a decision win over TUF 14 winner John Dodson at UFC on FOX 6 last January.

It is unknown at this time if Moraga plans to wait for Johnson to recover from his injury or if he will take another fight in the interim.

With Johnson vs. Moraga scrapped from the TUF 17 Finale, a bantamweight contest of Urijah Faber vs. Scott Jorgensen was scheduled as the new main event.

TUF 17 Finale goes down April 13, 2013, in Las Vegas, Nevada. Also confirmed for the card is the second-ever women's UFC bout between Miesha Tate and Cat Zingano, as well as a heavyweight contest that pits Travis Browne against Gabriel Gonzaga.