St. Louis Blues forward Andy McDonald on Thursday announced his retirement from the NHL.

McDonald, 35, has 489 points in 685 games with the Anaheim Ducks and Blues, but concussion issues have plagued him over the years.

"I'm fortunate to get out now," McDonald told Andy Strickland of the website TrueHockey.com. "I know I could play two or three more years and I love the game of hockey, but health-wise I know I shouldn't be playing."

McDonald spent the past six seasons with the Blues, and had 21 points in 37 regular-season games, but was held without a point in the Blues' first-round playoff loss to the Los Angeles Kings. Once that series ended, McDonald said he knew it was time to put away the skates.

"The last few years, too much of the focus became worrying about the next hit," McDonald said. "I was always thinking about it."