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Uptodate Reference Title
Bennett and Rolando fractures of the thumb metacarpals
Bennett and Rolando fractures of the thumb metacarpals
(A) A typical Bennett fracture is a unicondylar fracture of the base of the first metacarpal with the fracture fragment consisting of the volar ulnar corner of the proximal metacarpal. (B) A Rolando fracture is multi-fragmentary, with the entire articular base of the metacarpal being involved. By definition, no portion of the metacarpal shaft is in continuity with the carpometacarpal joint.