Tell the story of the incident giving as much detail as possible. Please be specific and include events that led to the incident, such as the group's familiarity with area, skill level, objectives, route, hazard evaluation, weather, etc.
Whilst lead climbing indoors I decided to take some practice falls. Unfortunately due to not really thinking this through and it being a spur of the moment idea I did this on a climb when a slab half way up. I fell multiple times without issue until I landed awkwardly on the slab. My ankle turned as I hit the wall.

I immediately stopped climbing, iced and elevated it. I thought it badly sprained and got a lift home from a friend.

Several days later I visited hospital where I was told that I had broken my medial malleous. I'm currently in a cast with instructions to not weight bear on my leg.