Re: Disadvantages of Knee Walkers
I loved my knee walker. It made my knee hurt, but I'm too klutzy with the crutches. I did ok hopping with a walker, though.
A couple hints for the knee walker:
Get one of those contoured memory foam bed pillows. Put it on the knee walker with the divot cradling your shin. Your weight keeps it on, mostly (I did lose a pillow at Target, once). Not only does it cushion the knee better, it seems to support your leg and ankle better.
Get a small lunch-box-type backpack. Attach it to the handlebars with velcro strapping. You can stuff a lot of stuff in there.