Trapeziometacarapal (TMC) joint arthritis, also known as carpometacarpal (CMC) joint arthritis or basilar thumb arthritis or rhizarthrosis, is a common form of arthritis that affects the first carpometacarpal (trapeziometacarpal) joint of the thumb. It is an inflammatory condition characterized by gradual wearing away of the cartilaginous surface of the TMC joint and the bones rubbing against each other causing inflammation and pain.
Distal radioulnar joint (DRUJ) arthritis is an inflammatory condition characterized by gradual wearing away of the cartilaginous surface of the radioulnar joint resulting in significant pain, swelling, stiffness, and interference in the functioning of the wrist and/or arm.
Arthritis is an inflammatory condition of one or more joints in your body. Triscaphoid joint arthritis is the localised pain and inflammation of the shared joint between the 3 carpal bones of your wrist. These bones are called scaphoid, trapezium and trapezoid and are present at the base of your thumb.