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Weber B ankle fracture

This is a trans-syndesmotic fracture with usually partial - and less commonly, total - rupture of the syndesmosis. According to Lauge-Hansen, it is the result of an exorotation force on the supinated foot.

The fracture starts anteriorly at the level of the ankle joint and extends in a posterior and proximal direction.

  • Stage 1 - Rupture of the anterior syndesmosis.
  • Stage 2 - Oblique fracture of the fibula (this is the true Weber B fracture).
  • Stage 3 - Rupture of the posterior syndesmosis  or - fracture of the malleolus tertius.
  • Stage 4 - Avulsion of the medial malleolus or - rupture of the medial collateral bands.

Weber B ankle fracture

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