I have some surgery scars on my left ankle from when I was 10, and they were later reopened when I was 16. What happened was I was at a kids holiday camp, and we had a snow day. I went sledding down a cliff, hit a rock, and broke my tibia and fibula. For a few years we thought it healed fine, then I went on an unusually tough 3 day tramp (that’s another story, but it was bad enough that one of the people got bad hypothermia and we nearly had search and rescue called on us). During that tramp my ankle started flaring up again, and when we got it checked out, it turned out my growth plate had fused my foot was growing sideways. So that meant another big surgery, a bone graft, and 6 months on crutches.