Columbus Blue Jackets General Manager Scott Howson announced that defenseman Radek Martinek will miss the remainder of the season due to post-concussion symptoms and that the club has signed defenseman Brett Lebda to a one-year contract. As is club policy, terms were not disclosed. Martinek, 35, scored one goal in seven games with Columbus this season before suffering a concussion in a game at Detroit on October 21 that has sidelined him for the past 39 games. “After consulting with our medical team it was determined that it would be in Radek’s best interest not to play again this season,” said Howson. “Radek is very disappointed, as are we, that he will not return to the ice this year but his health moving forward is the most important factor in this decision.”