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 basilar joint or CMC joint of the thumb is the carpometacarpal ... The trapezectomy is the planing or removal of the trapezium bone of the wrist. The trapezium is the articulation to the ...