[Scaphoid-trapezium-trapezoid dislocation. 5 cases].

The authors report 5 cases of scaphoid-trapezium-trapezoid dislocation (STT) which occurred in crush injuries of the hand. A good functional result was achieved by closed reduction and pinning whenever there was no associated soft tissue damage. However, lateral mid carpal osteoarthritis may develop and produce reduction of the abduction of the thumb as well as slight stiffness of the wrist.