Sheesh...I'm still trying to figure out how I broke my ankle by twisting it. But there was also the time I broke my elbow...and then when I reinjured it several years later and found out that it never healed properly...oh, and there was the time I sprained my wrist...I'd say I don't have a very good track record now.
My Mom is older, and she fell on her elbow...on pavement and made a nice little gash. She "fixed" it herself, and ended up seeing the doctor who told her she had a staph infection. It's never really seemed to have healed. I want her to go see another doctor to have them x-ray it, but ...she won't go to any more doctors. I worry, but have to respect her wishes. Old people with great insurance = battery of tests because they can.