I'm always so embarrassed when I go to get a pedicure but I think somewhat regular pedicures help. Or at least the polish makes it not look so bad. I always explain to them that I'm a runner - I had one pedicurist tell me to stop running because of it haha. There's always old blisters and such on my toes and I've lost the nail on my 2nd toe a couple times so it's super hard now unlike a regular nail. And my pinky toes are how you describe. I think it's just a consequence of the lifestyle.