I have been having some problems with arthritis in my left thumb joint (the one at the base of the thumb where it joins the hand). It bothers me most when I ride with my hands on my brake hoods. I added some padding to the area by pulling the hood back and stuffing in some of the dense foam removed from the palms of old gloves, but I'm looking for a more aesthetic and permanent fix.

Have any of you ever heard of "orthopedic" replacement brake hoods? I just need something that is fatter and a little softer than the typical brake hood, and I'm perfectly comfortable.

P.S. My bike is a perfect fit to me, so the pain is not being caused by improper handlebar adjustments, etc. The joint hurts doing other stuff, but riding my bike is the activity I'm concerned with most!