Blues Captain Chris Pronger underwent wrist surgery in Baltimore yesterday. Doctors removed a metal plate and shaved a portion of a bone in Pronger’s wrist. The team says it will be at least three or four weeks before they can begin to determine a return date. In 2001 a puck hit Pronger, breaking the wrist. At the time the plate was inserted to help the healing process, but Pronger’s complained about the pain it’s caused him. He said it limited his mobility and hurt his passing and puck handling. The Blues are back on the ice on Thursday against the Oilers. Goalie Fred Brathwaite may be able to start by then. He’s been out with a groin injury. Starter Brent Johnson has an ankle sprain.