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  • Title: Comminuted fracture of the ulnar sesamoid of the metacarpophalangeal joint of the thumb: an uncommon injury.
    Author: Shaw M, Lyburn ID, Torreggiani WC, Watura R.
    Journal: J Emerg Med; 2003 May; 24(4):437-9. PubMed ID: 12745048.
    Abstract:
    Fracture of the ulnar sesamoid of the metacarpophalangeal joint of the thumb is rare. Injury may be caused as a result of hyperextension or, less frequently, direct trauma. A sesamoid may be incompletely ossified, making it difficult to diagnose the fracture on radiographs. Early recognition of this entity leads to appropriate management. The case of a 26-year-old man who sustained a hyperextension injury of the thumb is presented. Radiographs demonstrated a fracture of the ulnar sesamoid of the thumb metacarpophalangeal joint. The literature regarding this uncommon injury is discussed.
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