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Olecranon Fractures

Background

Occurs in both children and adults

Classification

Colton's classification:

  • Undisplaced and stable
  • Displaced fractures
    • A - Avulsion fracture (most common in the elderly)
    • B - Transverse fracture
    • C - Comminuted fracture (direct trauma)
    • D - Fracture-dislocation (usually secondary to severe injury)

Undisplaced fractures must meet the following criteria:

  • Patient able to extend the elbow actively against gravity
  • Displacement < 2mm
  • No increase in this minimal degree of separation with flexion of the elbow to 90 degrees

NB – All the above findings indicate the presence of an intact triceps mechanism.

X-ray showing displaced fracture of the olecrano n



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