Orton, who has a history of shoulder problems dating back to early in his career, had been working of late on a bad shoulder, but not so bad that he couldn't wrestle. But in taking out the garbage to the curb this past week, the shoulder dislocated and he was in tremendous pain. It took three hours to pop it back into place. He was to have an MRI done to find out the extent of the damage, and if he may need surgery, so his prognosis is not determined.
Source: Meltzer, from the WON
I was reading through the Raw thread and people were saying he was probably just taking more time off, but holy ****, for a guy with the shoulder problems that Orton has always had, having your shoulder dislocated for three hours on something as simple as taking out the trash... Jesus.
For those who don't know/remember, he has hypermobile shoulders and has separated them at least 6 times over the course of his WWE career and been forced out of action for significant periods.