Fig. 2

Classification of calcaneofibular ligaments by running angle, right foot, lateral view. CFL20°, angle of the CFL with respect to the long axis of the fibula from 20° to 29°; CFL30°, angle of the CFL with respect to the long axis of the fibula from 30° to 39°; CFL40°, angle of the CFL with respect to the long axis of the fibula from 40° to 49°; CFL50°, angle of the CFL with respect to the long axis of the fibula from 50° to 59°; CFL2, CFLs with two crossing fiber bundles. 1: Fibula, 2: Calcaneus, 3: Calcaneofibular ligament, A: Anterior, P: Posterior