My podiatrist is good, but he isn't THAT good.
He told me that the night splint for my feet is ambidextrous, so to speak. But it's definitely a rightie. It's shaped for the right foot, and it even looks like it's shaped for the right foot. Moreover, it feels terrible on my left foot.
The doctor's assistant told me if I walk on it I will break it. Bullshit. I've walked on it a lot and it hasn't broken, and it's made of thick, hard plastic anyway.