mine was a broken tibia and fibula (the two bones in your lower leg, that go from your lower knee to your ankle). both bones broke in half, and were sticking out when it happened. it was a trampoline injury. i now have a rod that goes from my knee to my ankle, and it has been about eight or nine months since it happened, and im doing pretty good! the only thing that really hurts is running, but i can still tumble some!