From chicagoblackhawks.com: (link)

The following statement was issued today by Chicago Blackhawks Head Team Physician Dr. Michael Terry:

“Adam Burish went into the boards on Sunday night in Minnesota and injured his right knee. When a player like him leaves the ice it is always concerning, and unfortunately he suffered an ACL tear. He will undergo a reconstruction as soon as possible and we anticipate a complete recovery. His return will take approximately six months.”

Burish, 26, has recorded 309 penalty minutes and 17 points (10G, 7A) in 156 regular-season games over the last three years with the Blackhawks. Chicago’s ninth choice (282nd overall) in the 2002 NHL Entry Draft, Burish registered career highs with six goals and nine points in 66 regular-season contests last season before collecting five points (3G, 2A) in 17 tilts during his Stanley Cup Playoff debut.