Webber fractures: https://radiopaedia.org/articles/weber-classification-of-ankle-fractures
Ankle spaces:
https://radiopaedia.org/articles/medial-clear-space-ankle (medial)
https://radiopaedia.org/articles/tibiofibular-clear-space (tibiofubular space)
https://radiopaedia.org/articles/tibiofibular-overlap (fibular iverlap)