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Weber ankle fracture classification

Weber ankle fracture classification is a simple system for classification of lateral malleolar fractures, relating to the level of the fracture in relation to the ankle joint. It has a role in determining treatment.


  • type A
  • type B
    • at the level of the ankle joint, extending superiorly and laterally up the fibula
    • tibiofibular syndesmosis intact or only partially torn, but no widening of the distal tibiofibular articulation
    • medial malleolus may be fractured or deltoid ligament may be torn
    • variable stability
  • type C
    • above the level of the ankle joint
    • tibiofibular syndesmosis disrupted with widening of the distal tibiofibular articulation
    • medial malleolus fracture or deltoid ligament injury present
    • unstable: requires ORIF

History and etymology

This classification was first described by Denis in 1949 and later modified and popularised by Weber in 1972 2:

  • Bernhard Georg Weber (1929-2002), an orthopaedic surgeon: St Gall, Switzerland
  • Robert Denis (1880-1962), surgeon: Brussels, Belgium 1

See also

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