If you need to use a walking stick or crutch?!

Medical folks tell you to use it on the opposite side of your weak leg. Myself, I use it on the weak leg side as it makes more sense to me and it works well for me.

And don't forget you are now carrying a legitimate means of self-defense! Also good for prodding offensive people with offensively (if you have grey hairs already, otherwise you just get kicked).

you use it on your left . then when you put your injured right leg down you also put the crutch down.

This is a case where I believe each person needs to try it both ways and see which helps them most. Each case is different.

you should check with doctor.