[Isolated fracture of the os trapezium with concomitant dislocation of the carpometacarpal joint of the thumb. A case report].

Fractures of the greater multangular occur mostly combined with additional bone injuries but rarely isolated. This is a report on an isolated fracture of the greater multangular with luxation of the carpometacarpal joint, treated via osteosynthesis. According to most authors and the good result of own case operative treatment is necessary in all dislocated fractures or fractures that cannot be repositioned, to preserve patients from painful arthrosis and reduced function of the thumb.