GREENBUSH, Wis. (WHBL) -  A Plymouth man was injured Thursday afternoon in a motorcycle accident in the town of Greenbush.  The Sheriff’s Department said it happened about 4 o’clock on Kettle Moraine Drive just south of Greenbush.  33 year old Timothy Madson was operating the cycle when he lost control on a curve, left the road and slammed into a tree.  Madson was thrown about 30 yards, landing in the ditch.  He was assisted by a passing motorist, who took him to Urgent Care in Plymouth.  Madson was taken to Sheboygan Memorial hospital to be treated of his injuries and then released.