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 ...

This week we are going to discuss two conditions of the thumb: CMC joint arthritis and DeQuervain’s tenosynovitis. CMC joint arthritis of the thumb is a dysfunction and arthritic degeneration of ...

“It’s not arthritis, it’s the CMC joint and the MCP joint, between those two,” Scherzer explained. “The way I grip my pitches, I really come down on that thumb, and my thumb gets blown ...