This was mine! ice skating of all things and not having the boot laced all the way to the top Fell over put my foot behind me to steady myself and fell on it........

Shattered the bone told me the bone would never heal properly due to the nature of the damage and that I would probably always have some pain from it, arthritis etc and bye bye!
Had very limited movement in it especially upwards to start with, but now I do Taekwondo, Jiu Jitsu, Gym etc and its not too bad most days.