 So this is a case of a gymnast. So this is a very classic Pete's MSK case. It's called the gymnast's wrist. And the reason I'm showing this is to remind you to talk about the mechanism of injury, because the mechanism of injury is very, very revealing about why they get this injury at the wrist, why they get certain injuries in the shoulder, why they get certain injuries in the knee, because the mechanism is all the same. So once you know the mechanism, you'll be awesome. So let's pretend that this is our cartoon diagram of our distilled radius. And there's a gap here. And here is our epiphysis. And this gap is going to be cartilage. That's going to be feisial cartilage. The feisial cartilage has three important components that you have to pay attention to.