[Dorsal trapezoid-scaphoid luxation. A case report].

Dorsal trapezoscaphoid dislocations are characterised by posterolateral translation of the trapezium and the distal part of the first finger in relation to the rest of the wrist and hand. The authors found only 7 cases in the literature and they analyse the principal features in the light of a new personal case caused by violent trauma. It was easily reduced orthopaedically, but because of the instability, double pinning was performed to the adjacent bones and plaster immobilisation was maintained for six weeks. An excellent functional and radiological result was obtained and remained stable after two years.