[Critical study on the operative treatment of scaphoidpseudarthrosis (author's transl)].

At first causes for the emergence of os naviculare non-union and therapeutical principles are discussed. The Matti-Russe operative procedure, after a thorough evaluation of all available possibilities, seems to be the method most preferable. Seemingly bad results most of the time occur due to technical errors and mistakes in selection of the transplant. Furthermore sources of error in placing the skin incision, in extirpation of the pseudarthrosis gap, in preparation of the graft bed and in styloidectomy are explained in detail. Recommendations for the post-operative management are presented.