The radius is the one on the thumb side of your arm, and it’s a bit of a drama queen. It does all the heavy lifting when you turn your palm up to catch a falling sandwich or wave goodbye.
If you’ve ever tried to twist a doorknob with a deadbolt, you’ve just asked your radius to do a little spin. It’s the bone that makes you think, “Wow, I’m pretty coordinated,” right before you smack your funny bone.
Without the radius, you couldn’t give a thumbs-up to your buddy across the bar. That little pivot motion is all it—and it loves the attention.
The Ulna: The Steady Sidekick
The ulna is the quieter, more reliable bone on the pinky side. It’s the one you rest your chin on when you’re bored at a meeting, and it never complains.
Remember that time you leaned on your elbow while scrolling through your phone for an hour? Your ulna was the silent martyr holding the fort—like a couch potato who actually pays the rent. It’s also the bone that makes that pointy bump at your elbow, which is scientifically called the olecranon, but I call it the “dinner bell” because you always hit it on the table edge.
The ulna doesn’t do the twist like the radius; it just sits there, thick and sturdy, like the friend who holds your hair back after too many margaritas.
Right Radius And Ulna Anterior View - All For One
