The humerus, paired radius, and ulna come together to form what joint?

Elbow is correct because the elbow joint is where the upper-arm bone (humerus) meets the two forearm bones (radius and ulna). It’s mainly a hinge (humeroulnar and humeroradial joints) that lets you bend and straighten your arm, while an adjacent pivot (proximal radioulnar joint) lets the radius rotate over the ulna so you can pronate and supinate (turn your palm down or up). By contrast, the knee involves femur–tibia, the shoulder is humerus–scapula, and the ankle is tibia/fibula–talus. Memory tip: “H-U