“Randy has suffered from a dislocated shoulder. He’s had chronic problems with his shoulder, and a recent MRI that was done found he has a Bankart lesion in his shoulder, some stretched ligaments and a partially torn rotator cuff,” WWE physician Dr. Steve Daquino told WWE.com. “At this point it’s a matter of
when he dislocates the shoulder again, and not
if. It looks like he might require surgery, and recovery time for such a surgery would be four to six months.” source
WWE.com
Orton has a long history of injuries and he's set for another run on the sidelines. He's twice broken his collarbone once in a match vs Triple H and the other in a motorcycle accident and his current injury allegedly happened while taking out the trash at home.
Orton was over with the crowd but was on the mid card with no storylines going at the time of the injury.
