Apparently it's not just Canadians who feel this way, or just Canadian kids getting hurt...
The Dangers of Baby Walkers
The American Academy of Pediatrics (AAP) feels that walkers should be banned from the United States because:
baby walkers put children at risk for injury and
there are no clear benefits from using a baby walker.
From 1989 to 1993 there were 11 deaths involving a baby walker. Each year over 8000 children are treated in hospital emergency rooms for walker-related injuries. Many more children are injured and go to their physician's office. Walker injuries can be serious, such as skull fractures, head injuries causing bleeding inside the head, broken legs and arms, and burns.
http://www.med.umich.edu/1libr/pa/pa_walkers_hhg.htm(by the way..hit the 100 mark with this post)