Carpometacarpal (CMC) joint arthroplasty is a surgery used to treat thumb arthritis when other treatments fail. The procedure involves removing the trapezium, a small wrist bone that supports the ...

The base of the thumb—called the carpometacarpal joint, or CMC—is a common site for arthritis. Osteoarthritis (OA) can develop in the thumb. This condition gradually occurs from joint wear and ...

In addition the first metacarpal bone moves ulnarward, swinging in that direction from a pivot at the carpometacarpal joint. In circumduction the thumb swings in a circle with the ...

Degenerative joint disease: Degenerative joint disease of the CMC joint of the thumb is an extremely prevalent condition which causes weakness with grasping, pain with thumb use as well as ...