Fig. 1

There are four types of Bartoníček’s classification scheme: a (type 1): extraincisural fragment with an intact fibular notch; b (type 2): posterolateral fragment extending into the fibular notch; c (type 3): posteromedial two-part fragment involving the medial malleolus; d (type 4): large posterolateral triangular fragment (involving more than one-third of the notch)