Canucks defenseman Mattias Ohlund is expected to undergo surgery to remove bone chips in his left knee, according to a Vancouver radio station, and reported by Yahoo.com. CKNW-AM reported Thursday that Ohlund is not with the team in Phoenix and has flown back to Vancouver. According to the report, Ohlund is expected to have arthroscopic surgery, which will sideline him for at least the remainder of the regular season.