"Former Blue Paul Kariya announced his retirement Wednesday from the NHL, citing the advice of doctors who say that he would be susceptible to another concussion.

Kariya played three seasons with the Blues (2007-10), posting 36 goals and 87 assists in 168 games. Two hip surgeries limited him to 11 games in 2008-09 and he missed the team's trip to the postseason.

Kariya returned in 2009-10, but on Dec. 27, 2009, the winger was hit by Buffalo's Patrick Kaleta and suffered a concussion, causing him to miss six games. Kaleta received an elbowing penalty, but the NHL did not suspend him."