Carpometacarpal (CMC) joint arthroplasty is a surgery to treat severe arthritis in the thumb. Doctors recommend it when other treatments, like braces or cortisone shots, no longer help with pain.

CHICAGO - Pinching, gripping, squeezing, and lifting all sound like simple tasks, but for Marcy Dub, thumb arthritis ... with medication or braces, Cohen recommends carpometacarpal arthroplasty ...