Why Is My Thumb Sore?
Posted on by Shelia M. Tenny, OTR/L, CHT
If you are in your fourth or fifth decade of life, or beyond, and have begun experiencing pain in the base of your thumb and wrist, it could be a symptom of osteoarthritis of the CMC (carpo-meta-carpal) joint. This is also sometimes referred to as basal joint arthritis.