II. Epidemiology

  1. Rare in children

III. Description

  1. Fracture of the distal to middle-third shaft of radius
  2. Dislocation of Distal radio-ulnar joint (ulna will appear medially displaced at the wrist)
    1. Risk of Ulnar Nerve injury

IV. Mechanism

  1. Fall on Outstretched Hand with wrist extended and pronated

V. Exam

  1. See Forearm Fracture
  2. Evaluate for wrist deformity
  3. Evaluate for distal radioulnar joint tenderness

VI. Signs (Triad)

  1. Images
    1. orthoForearmFxDislocate.jpg
  2. Radius Fracture (distal third)
  3. Radius Shortening
  4. Radio-ulnar dislocation (often missed)
    1. Occurs due to shortening of Fracture
    2. Shortening can only occur with injury elsewhere

VII. Associated Conditions

  1. Distal radioulnar space widening
  2. Ulnar styloid Fracture
  3. Radius shortening
  4. Ulnar dislocation

VIII. Management

  1. Surgery usually required

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