It was believed that Seth Rollins was suffering from a back injury that would require some time off and possibly even minor surgery. This is why Seth Rollins was originally pulled from the Elimination Chamber match, along with Jason Jordan. The pair were initially replaced by The Miz and Finn Balor, who were initially set to face each other in a one on one match for the Intercontinental Championship, however, their match was scrapped so that the pair could be added to the Elimination Chamber.
Whilst Jordan’s injury is set to keep him out for several months, meaning he will miss WrestleMania, Seth Rollins has been more fortunate. Rollins’ tests for a degenerated or torn lumbar disc ended up coming back negative, with results indicating that Rollins was suffering from a minor muscle tear. Rollins originally reported having acute low back pain and inflammation, which often results from injury to the muscles, ligaments, joints, or discs. The body commonly reacts to injury by mobilizing an inflammatory healing response. While inflammation sounds minor, it can cause severe pain, which is exactly what Rollins was experiencing.
The significant overlap of nerve supply to many of the discs, muscles, ligaments, and other spinal structures, can make it difficult for the brain to accurately sense which is the cause of the pain. Therefore, a suspected torn lumbar disc can feel the same as a pulled muscle – both creating inflammation and painful muscle spasm in the same area. Fortunately for Rollins, muscles and ligaments heal rapidly, whilst a torn disc would’ve have resulted in Rollins missing WrestleMania for the second time in three years.
Following the diagnosis over the weekend, the decision to made to re-add Seth Rollins to the Elimination Chamber match, thus making it the first ever seven man Elimination Chamber match.