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【Abstract】Simultaneous fracture/dislocation of the thumb carpometacarpal (CMC) joint and dislocation of the metacarpophalangeal (MCP) joint is considered as a rare injury pattern. We report an unusual case of dorsal disloca-tion of MCP joint of the thumb associated with extraarticular fracture of the base of the first metacarpal in a 28-year-old man. The dislocation of MCP joint had been missed during initial presentation at a peripheral centre. The patient made an uneventful recovery following open reduction and fixa-tion with 1.25 mm Kirschner wire of the MCP joint along with repair of the ulnar collateral ligament. This injury pat-tern has not been previously reported to the best of our knowledge in the English-language based medical literature. Key words: Carpometacarpal joints; Metacarpopha-langeal joint; Thumb