Key Takeaways: The CMC (carpometacarpal) joint is at the base of the thumb, where the 1st metacarpal bone meets the trapezium. The most common place women get arthritis in their hand is at the CMC joint. Carpometacarpal arthritis is more common amongst post-menopausal women over the age of 50. The carpometacarpal joint (CMC) is the… Read more »
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