Bubba Tyer, the Redskins' director of sports medicine, said Clinton Portis would undergo surgery as soon as Monday to repair the fourth metacarpal bone in his right hand, which is the bone that runs below the ring finger. Tyer said Portis would have screws inserted to stabilize the bone. Portis is expected to miss at least a month. "It could be as long as four weeks, three or four, something like that," Tyer said. "He needs to be able to use his hands and function and be secure what he does with the football."