UFC heavyweight contender Shane Carwin will undergo surgery to address lingering neck and back problems that forced him out of a proposed Jan. 1 fight with Roy Nelson.
According to Carwin’s manager Jason Genet, the 35-year-old has been suffering through the injuries for years, working through them with physical therapy and pain medication. But the injury has gotten progressively worse until a few days ago, one of Carwin’s arms went numb down to the elbow, necessitating a visit to the doctor.