I have a few problems with my left hand that make it painfully difficult to change a tire. My hand looks perfectly normal in every respect (except for a couple of thin surgical scars) but is weaker than normal due to a few pre-existing conditions (lunate spacer in the wrist, severed tendon injury in the thumb, arthritis in the middle finger). My doctor said that my grip is pretty strong, all things considered.... in fact, one doctor was amazed at my grip strength. I can do 99.999% of everything I want to..... everything, it seems, but change a tire.
I've tried by myself but my husband always has to pitch in to finish the job. I don't mind the help, but I don't like the helpless feeling I'd have if I'm out alone with a flat. I know the steps, but pushing the tire into the rim is almost impossible and painfully difficult for my left hand to complete even with the traditional tire-changing levers.
Are there any new or special tools or techniques I can learn or use to improve my ability to change a tire by myself?