You Can't Move Your Wrist Without a Joint, Right?

He was missing something called the Radial Carpal Joint, which is like this joint that connects your wrist joint from your hand. Like you can't move your hand without moving your wrist anymore. And I don't know... I saw a picture of it. His hand looks really long and his fingers are really skinny and they look really, really long. He's going to grow up to be skinny and just very physically weak.