Also make sure the cane is the right length so you can lean on it fully from the back of your palm and with a straight arm so you lock the elbow and the line of force goes up the bone (well it works that way for me)
That can mean getting either a less-stylish but adjustable cane, getting one made custom, or sawing one off until it's the correct distance from your palm to the ground (and don't forget that cane tips add length to the cane and you'll need them for ordinary use to reduce slippage).