I see there have been mentions of wearing knee pads in case of falling. My big fear is of falling and having a hip fracture, so I bought some hip protectors. They are definitely not glamorous! And not particularly comfortable but provide peace of mind. They are supplied with 3 pairs of pants, which are not far removed from the Bridget Jones type! So far I have not been prone to falling, but if I am somewhere where there may be crowds, or if there is ice on the ground, I do wear them, as I could easily lose my balance. Eventually I shall have to wear them al the time.
They are not the easiest of things to find, but shops which supply aids for people with disabilities may have them or be able to get them. Or try google.