Lateral surfaceLateralsurfaceInterosseousmembraneInterosseousborderMedialsurfaceAnteriorborderMedialborderPosteriorborderPosterior surfacePosterior surfaceMedial crestInterosseous borderInterosseousborderMedialsurfaceAnteriorborderAnteriorborderGroove for fibularis longus and brevis musclesRoughened triangulararea that fits intofibular groove of tibiaABCDFibulaTibiaFibular grooveon tibiaSoleal lineArticular surfaces for talusMedial malleolusGroove for tendon oftibialis posterior muscleMalleolar fossaLateralmalleolusLateral malleolus