[Incidental scaphoideo-trapezoid arthrodesis instead of Matti operation]

Author reports on a technical fault during Matti--Russe's operation. The corticospongious graft was inserted instead of the pseudarthrosis, in the scaphoid-trapezial joint. Because of the scaphoid-trapezial ankylosis developed, the persistent pseudarthrosis and the degeneration in the carpal bones the freeing of complaints could be reached only by intercarpal arthrodesis and wrist denervation, according to Wilhelm.