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.