Source: The Wrestling Observer Newsletter
Two days before Over the Limit, Randy Orton dislocated his right shoulder while attempting a dunk in pick-up basketball game in St. Louis. This explains why he was favoring the shoulder at the house show in Cincinnati the night before the pay-per-view event.
Orton's had problems with the shoulder for years as it's the third time in which it's been dislocated. He plans to focus on physical therapy before deciding on whether to have surgery. An injury angle was done on Monday's RAW where Edge hurt Orton's shoulder to take him out of the evening's main event. Hence, if he's not healthy enough to compete at Fatal 4-Way, WWE will have a storyline explanation.