Fig. 1
a Visualization of tibial and fibular centers of volume of native (blue) and operated (red) side, respective connection vectors (\(\overrightarrow{r_0}\), \(\overrightarrow{r_1}\)), and measurements of vertical offset (Δz) and translation angle (Δα) according to Souleiman et al. [14]. A case with dorsal malreduction of the fibula at the stabilized ankle (red) is illustrated. The osteosynthesis plate (red model) has been left in this model to illustrate the operated side. These were removed when calculating the parameters (see 2b). b Visualization of tibio-fibular clear space (CS0, CS1) measurement for native (blue) and operated (red) side (b)