Courtesy of WWE.com:
As WWE Champion CM Punk’s potential title defense against Ryback approaches on the Jan. 7 edition of Monday Night Raw, WWE.com can report that The Straight Edge Superstar has been medically cleared for in-ring competition several weeks after his undergoing knee surgery. The news was confirmed on the Jan. 2 edition of WWE Main Event on ION Television, where WWE physician Dr. Michael Sampson Touted his diagnosis to the WWE Universe. The decision returns Punk to action effective immediately, meaning he will defend his championship as scheduled in a Tables, Ladders & Chairs Match against Ryback.