Recently I have researching using a walking cane for self defense. After 6 knee operations and a total knee replacement, I sometimes use a cane for support when my knees are not feeling their best. As it turns out, there is a real art to using the cane for self defense.

Here is an except from a website about cane self-defense.
http://www.donrearic.com/cane1.htmlThe Cane for Self-defense
Many people do not like the walking cane for Self-defense because it does not go along with their age, attire or, they simply do not want to be associated with someone who may be disabled. They do not wish to have the stigma that is often associated with the cane.
There is a strength in that appearance. The strong appearing to be weak might be all the edge you need in a lot of physical confrontations. That’s a "Combat Ruse." A young attacker who is strong might make the incredible mistake of thinking you are easy prey, to find out all too late that you’re not.
The Cane gives even more reach than the average telescoping baton in some cases and is legal in more areas than that weapon.
Perhaps the greatest strength of all is in the presentation. The Cane is already "drawn." You can strike immediately with it. There is an old saying in Gun Circles, "The fastest draw is to have the gun in your hand when the trouble starts." This applies to the knife as well, and the stick. The strength of the Cane is, it is a Cane! It’s not a gun or a knife, it is already out in the open and you can strike instantly with it.
Besides learning all of the angles of attack and the methods (lobtik, witik, abanico, etc.) in the Filipino Martial Arts, there are a few strikes that can be taken from Hanbojutsu. Japanese Cane [half staff, three feet long] techniques.
Here is the site where I bought a self-defense cane. I bought the Raw Stock Cane, so that I could finish it the way I want.
http://www.canemasters.com/