I had a bad pilon fracture of my ankle a couple of years ago with both a break on Tibia and Fibia. I fell off a ramp whilst pushing a wheelbarrow full of rubble into a skip (should've stuck to building code instead of building a house!). Normally that type of injury is associated with car crashes when someone instinctively puts all their force on the brake and the shock of the crash travels up the pedal into the ankl…
Internally degloved my calf, broke my fibula, and took a chunk out of my tibia - and being me, decided to ice it, strap it, look out for compartmentalisation and rhabdomyolysis, and hobble around on it until it was better. Took about two months before I could walk normally.
I only know what I did to it because I dislocated my knee last year skiing, and they were thoroughly confused as to what they were looking at - had to explain that I mashed my leg and couldn’t be bothered wasting my time sitting in A&E for a few days.
Either way, it healed just fine with zero intervention. My calf is a slightly funny shape from the fascia still being bunched up around my ankle, but it doesn’t seem to do any harm, and the break to the fibula healed almost perfectly - slightly offset but works just fine.