WWE Superstar John Cena undergoes shoulder surgery

John Cena could be set for a spell on the sidelines after undergoing shoulder surgery.

The Cenation Leader, recently back from a two-month break from the ring, received treatment on his right shoulder last week in Birmingham, Alabama.

"He [Cena] had a complete tear of a small portion of the rear rotator cuff tendon, the infraspinatus - toward the top-back of his shoulder - which I repaired," Dr. Dugas told WWE.com.

"Also, there was a large piece of loose tissue in his shoulder that needed to be removed.

"The first hurdle is getting the cuts to heal and getting cartilage to form over the defect," Dugas said. "After that, we'll get back to function."

It is currently unknown when Cena will be able to return to action.