The trapezium bone is a small oblong bone that plays a role in the stability of the carpal tunnel and the thumb joint. Its shape and size, as well as its location below the thumb, cause its ...

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 ...

During LRTI, a surgeon removes the damaged bone surfaces and part or all of the trapezium bone in your wrist. They then use your ligament to make a cushion to separate the remaining bones.