Trapeziometacarpal pseudarthrosis. A, Percutaneous Kirschner wires allow pain-free mobilization of thumb. B, Dorso-palmar radiograph showing advanced degenerative changes in carpometacarpal joint. C, After surgery, before removal of Kirschner wires. D, Dorso-palmar radiograph 3 years after surgery; note maintenance of trapeziometacarpal joint line.